drivers/media/platform/chips-media/coda-common.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Coda multi-standard codec IP
   4  *
   5  * Copyright (C) 2012 Vista Silicon S.L.
   6  *    Javier Martin, <[email protected]>
   7  *    Xavier Duret
   8  */
   9
  10 #include <linux/clk.h>
  11 #include <linux/debugfs.h>
  12 #include <linux/delay.h>
  13 #include <linux/firmware.h>
  14 #include <linux/gcd.h>
  15 #include <linux/genalloc.h>
  16 #include <linux/idr.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/io.h>
  19 #include <linux/irq.h>
  20 #include <linux/kfifo.h>
  21 #include <linux/module.h>
  22 #include <linux/of_device.h>
  23 #include <linux/platform_device.h>
  24 #include <linux/pm_runtime.h>
  25 #include <linux/slab.h>
  26 #include <linux/videodev2.h>
  27 #include <linux/of.h>
  28 #include <linux/ratelimit.h>
  29 #include <linux/reset.h>
  30
  31 #include <media/v4l2-ctrls.h>
  32 #include <media/v4l2-device.h>
  33 #include <media/v4l2-event.h>
  34 #include <media/v4l2-ioctl.h>
  35 #include <media/v4l2-mem2mem.h>
  36 #include <media/videobuf2-v4l2.h>
  37 #include <media/videobuf2-dma-contig.h>
  38 #include <media/videobuf2-vmalloc.h>
  39
  40 #include "coda.h"
  41 #include "imx-vdoa.h"
  42
  43 #define CODA_NAME               "coda"
  44
  45 #define CODADX6_MAX_INSTANCES   4
  46 #define CODA_MAX_FORMATS        5
  47
  48 #define CODA_ISRAM_SIZE (2048 * 2)
  49
  50 #define MIN_W 48
  51 #define MIN_H 16
  52
  53 #define S_ALIGN         1 /* multiple of 2 */
  54 #define W_ALIGN         1 /* multiple of 2 */
  55 #define H_ALIGN         1 /* multiple of 2 */
  56
  57 #define fh_to_ctx(__fh) container_of(__fh, struct coda_ctx, fh)
  58
  59 int coda_debug;
  60 module_param(coda_debug, int, 0644);
  61 MODULE_PARM_DESC(coda_debug, "Debug level (0-2)");
  62
  63 static int disable_tiling;
  64 module_param(disable_tiling, int, 0644);
  65 MODULE_PARM_DESC(disable_tiling, "Disable tiled frame buffers");
  66
  67 static int disable_vdoa;
  68 module_param(disable_vdoa, int, 0644);
  69 MODULE_PARM_DESC(disable_vdoa, "Disable Video Data Order Adapter tiled to raster-scan conversion");
  70
  71 static int enable_bwb = 0;
  72 module_param(enable_bwb, int, 0644);
  73 MODULE_PARM_DESC(enable_bwb, "Enable BWB unit for decoding, may crash on certain streams");
  74
  75 void coda_write(struct coda_dev *dev, u32 data, u32 reg)
  76 {
  77         v4l2_dbg(3, coda_debug, &dev->v4l2_dev,
  78                  "%s: data=0x%x, reg=0x%x\n", __func__, data, reg);
  79         writel(data, dev->regs_base + reg);
  80 }
  81
  82 unsigned int coda_read(struct coda_dev *dev, u32 reg)
  83 {
  84         u32 data;
  85
  86         data = readl(dev->regs_base + reg);
  87         v4l2_dbg(3, coda_debug, &dev->v4l2_dev,
  88                  "%s: data=0x%x, reg=0x%x\n", __func__, data, reg);
  89         return data;
  90 }
  91
  92 void coda_write_base(struct coda_ctx *ctx, struct coda_q_data *q_data,
  93                      struct vb2_v4l2_buffer *buf, unsigned int reg_y)
  94 {
  95         u32 base_y = vb2_dma_contig_plane_dma_addr(&buf->vb2_buf, 0);
  96         u32 base_cb, base_cr;
  97
  98         switch (q_data->fourcc) {
  99         case V4L2_PIX_FMT_YUYV:
 100                 /* Fallthrough: IN -H264-> CODA -NV12 MB-> VDOA -YUYV-> OUT */
 101         case V4L2_PIX_FMT_NV12:
 102         case V4L2_PIX_FMT_YUV420:
 103         default:
 104                 base_cb = base_y + q_data->bytesperline * q_data->height;
 105                 base_cr = base_cb + q_data->bytesperline * q_data->height / 4;
 106                 break;
 107         case V4L2_PIX_FMT_YVU420:
 108                 /* Switch Cb and Cr for YVU420 format */
 109                 base_cr = base_y + q_data->bytesperline * q_data->height;
 110                 base_cb = base_cr + q_data->bytesperline * q_data->height / 4;
 111                 break;
 112         case V4L2_PIX_FMT_YUV422P:
 113                 base_cb = base_y + q_data->bytesperline * q_data->height;
 114                 base_cr = base_cb + q_data->bytesperline * q_data->height / 2;
 115         }
 116
 117         coda_write(ctx->dev, base_y, reg_y);
 118         coda_write(ctx->dev, base_cb, reg_y + 4);
 119         coda_write(ctx->dev, base_cr, reg_y + 8);
 120 }
 121
 122 #define CODA_CODEC(mode, src_fourcc, dst_fourcc, max_w, max_h) \
 123         { mode, src_fourcc, dst_fourcc, max_w, max_h }
 124
 125 /*
 126  * Arrays of codecs supported by each given version of Coda:
 127  *  i.MX27 -> codadx6
 128  *  i.MX51 -> codahx4
 129  *  i.MX53 -> coda7
 130  *  i.MX6  -> coda960
 131  * Use V4L2_PIX_FMT_YUV420 as placeholder for all supported YUV 4:2:0 variants
 132  */
 133 static const struct coda_codec codadx6_codecs[] = {
 134         CODA_CODEC(CODADX6_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264,  720, 576),
 135         CODA_CODEC(CODADX6_MODE_ENCODE_MP4,  V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4, 720, 576),
 136 };
 137
 138 static const struct coda_codec codahx4_codecs[] = {
 139         CODA_CODEC(CODA7_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264,   720, 576),
 140         CODA_CODEC(CODA7_MODE_DECODE_H264, V4L2_PIX_FMT_H264,   V4L2_PIX_FMT_YUV420, 1920, 1088),
 141         CODA_CODEC(CODA7_MODE_DECODE_MP2,  V4L2_PIX_FMT_MPEG2,  V4L2_PIX_FMT_YUV420, 1920, 1088),
 142         CODA_CODEC(CODA7_MODE_DECODE_MP4,  V4L2_PIX_FMT_MPEG4,  V4L2_PIX_FMT_YUV420, 1280, 720),
 143 };
 144
 145 static const struct coda_codec coda7_codecs[] = {
 146         CODA_CODEC(CODA7_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264,   1280, 720),
 147         CODA_CODEC(CODA7_MODE_ENCODE_MP4,  V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4,  1280, 720),
 148         CODA_CODEC(CODA7_MODE_ENCODE_MJPG, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_JPEG,   8192, 8192),
 149         CODA_CODEC(CODA7_MODE_DECODE_H264, V4L2_PIX_FMT_H264,   V4L2_PIX_FMT_YUV420, 1920, 1088),
 150         CODA_CODEC(CODA7_MODE_DECODE_MP2,  V4L2_PIX_FMT_MPEG2,  V4L2_PIX_FMT_YUV420, 1920, 1088),
 151         CODA_CODEC(CODA7_MODE_DECODE_MP4,  V4L2_PIX_FMT_MPEG4,  V4L2_PIX_FMT_YUV420, 1920, 1088),
 152         CODA_CODEC(CODA7_MODE_DECODE_MJPG, V4L2_PIX_FMT_JPEG,   V4L2_PIX_FMT_YUV420, 8192, 8192),
 153 };
 154
 155 static const struct coda_codec coda9_codecs[] = {
 156         CODA_CODEC(CODA9_MODE_ENCODE_H264, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_H264,   1920, 1088),
 157         CODA_CODEC(CODA9_MODE_ENCODE_MP4,  V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_MPEG4,  1920, 1088),
 158         CODA_CODEC(CODA9_MODE_ENCODE_MJPG, V4L2_PIX_FMT_YUV420, V4L2_PIX_FMT_JPEG,   8192, 8192),
 159         CODA_CODEC(CODA9_MODE_DECODE_H264, V4L2_PIX_FMT_H264,   V4L2_PIX_FMT_YUV420, 1920, 1088),
 160         CODA_CODEC(CODA9_MODE_DECODE_MP2,  V4L2_PIX_FMT_MPEG2,  V4L2_PIX_FMT_YUV420, 1920, 1088),
 161         CODA_CODEC(CODA9_MODE_DECODE_MP4,  V4L2_PIX_FMT_MPEG4,  V4L2_PIX_FMT_YUV420, 1920, 1088),
 162         CODA_CODEC(CODA9_MODE_DECODE_MJPG, V4L2_PIX_FMT_JPEG,   V4L2_PIX_FMT_YUV420, 8192, 8192),
 163 };
 164
 165 struct coda_video_device {
 166         const char *name;
 167         enum coda_inst_type type;
 168         const struct coda_context_ops *ops;
 169         bool direct;
 170         u32 src_formats[CODA_MAX_FORMATS];
 171         u32 dst_formats[CODA_MAX_FORMATS];
 172 };
 173
 174 static const struct coda_video_device coda_bit_encoder = {
 175         .name = "coda-video-encoder",
 176         .type = CODA_INST_ENCODER,
 177         .ops = &coda_bit_encode_ops,
 178         .src_formats = {
 179                 V4L2_PIX_FMT_NV12,
 180                 V4L2_PIX_FMT_YUV420,
 181                 V4L2_PIX_FMT_YVU420,
 182         },
 183         .dst_formats = {
 184                 V4L2_PIX_FMT_H264,
 185                 V4L2_PIX_FMT_MPEG4,
 186         },
 187 };
 188
 189 static const struct coda_video_device coda_bit_jpeg_encoder = {
 190         .name = "coda-jpeg-encoder",
 191         .type = CODA_INST_ENCODER,
 192         .ops = &coda_bit_encode_ops,
 193         .src_formats = {
 194                 V4L2_PIX_FMT_NV12,
 195                 V4L2_PIX_FMT_YUV420,
 196                 V4L2_PIX_FMT_YVU420,
 197                 V4L2_PIX_FMT_YUV422P,
 198         },
 199         .dst_formats = {
 200                 V4L2_PIX_FMT_JPEG,
 201         },
 202 };
 203
 204 static const struct coda_video_device coda_bit_decoder = {
 205         .name = "coda-video-decoder",
 206         .type = CODA_INST_DECODER,
 207         .ops = &coda_bit_decode_ops,
 208         .src_formats = {
 209                 V4L2_PIX_FMT_H264,
 210                 V4L2_PIX_FMT_MPEG2,
 211                 V4L2_PIX_FMT_MPEG4,
 212         },
 213         .dst_formats = {
 214                 V4L2_PIX_FMT_NV12,
 215                 V4L2_PIX_FMT_YUV420,
 216                 V4L2_PIX_FMT_YVU420,
 217                 /*
 218                  * If V4L2_PIX_FMT_YUYV should be default,
 219                  * set_default_params() must be adjusted.
 220                  */
 221                 V4L2_PIX_FMT_YUYV,
 222         },
 223 };
 224
 225 static const struct coda_video_device coda_bit_jpeg_decoder = {
 226         .name = "coda-jpeg-decoder",
 227         .type = CODA_INST_DECODER,
 228         .ops = &coda_bit_decode_ops,
 229         .src_formats = {
 230                 V4L2_PIX_FMT_JPEG,
 231         },
 232         .dst_formats = {
 233                 V4L2_PIX_FMT_NV12,
 234                 V4L2_PIX_FMT_YUV420,
 235                 V4L2_PIX_FMT_YVU420,
 236                 V4L2_PIX_FMT_YUV422P,
 237         },
 238 };
 239
 240 static const struct coda_video_device coda9_jpeg_encoder = {
 241         .name = "coda-jpeg-encoder",
 242         .type = CODA_INST_ENCODER,
 243         .ops = &coda9_jpeg_encode_ops,
 244         .direct = true,
 245         .src_formats = {
 246                 V4L2_PIX_FMT_NV12,
 247                 V4L2_PIX_FMT_YUV420,
 248                 V4L2_PIX_FMT_YVU420,
 249                 V4L2_PIX_FMT_YUV422P,
 250                 V4L2_PIX_FMT_GREY,
 251         },
 252         .dst_formats = {
 253                 V4L2_PIX_FMT_JPEG,
 254         },
 255 };
 256
 257 static const struct coda_video_device coda9_jpeg_decoder = {
 258         .name = "coda-jpeg-decoder",
 259         .type = CODA_INST_DECODER,
 260         .ops = &coda9_jpeg_decode_ops,
 261         .direct = true,
 262         .src_formats = {
 263                 V4L2_PIX_FMT_JPEG,
 264         },
 265         .dst_formats = {
 266                 V4L2_PIX_FMT_NV12,
 267                 V4L2_PIX_FMT_YUV420,
 268                 V4L2_PIX_FMT_YVU420,
 269                 V4L2_PIX_FMT_YUV422P,
 270         },
 271 };
 272
 273 static const struct coda_video_device *codadx6_video_devices[] = {
 274         &coda_bit_encoder,
 275 };
 276
 277 static const struct coda_video_device *codahx4_video_devices[] = {
 278         &coda_bit_encoder,
 279         &coda_bit_decoder,
 280 };
 281
 282 static const struct coda_video_device *coda7_video_devices[] = {
 283         &coda_bit_jpeg_encoder,
 284         &coda_bit_jpeg_decoder,
 285         &coda_bit_encoder,
 286         &coda_bit_decoder,
 287 };
 288
 289 static const struct coda_video_device *coda9_video_devices[] = {
 290         &coda9_jpeg_encoder,
 291         &coda9_jpeg_decoder,
 292         &coda_bit_encoder,
 293         &coda_bit_decoder,
 294 };
 295
 296 /*
 297  * Normalize all supported YUV 4:2:0 formats to the value used in the codec
 298  * tables.
 299  */
 300 static u32 coda_format_normalize_yuv(u32 fourcc)
 301 {
 302         switch (fourcc) {
 303         case V4L2_PIX_FMT_NV12:
 304         case V4L2_PIX_FMT_YUV420:
 305         case V4L2_PIX_FMT_YVU420:
 306         case V4L2_PIX_FMT_YUV422P:
 307         case V4L2_PIX_FMT_YUYV:
 308                 return V4L2_PIX_FMT_YUV420;
 309         default:
 310                 return fourcc;
 311         }
 312 }
 313
 314 static const struct coda_codec *coda_find_codec(struct coda_dev *dev,
 315                                                 int src_fourcc, int dst_fourcc)
 316 {
 317         const struct coda_codec *codecs = dev->devtype->codecs;
 318         int num_codecs = dev->devtype->num_codecs;
 319         int k;
 320
 321         src_fourcc = coda_format_normalize_yuv(src_fourcc);
 322         dst_fourcc = coda_format_normalize_yuv(dst_fourcc);
 323         if (src_fourcc == dst_fourcc)
 324                 return NULL;
 325
 326         for (k = 0; k < num_codecs; k++) {
 327                 if (codecs[k].src_fourcc == src_fourcc &&
 328                     codecs[k].dst_fourcc == dst_fourcc)
 329                         break;
 330         }
 331
 332         if (k == num_codecs)
 333                 return NULL;
 334
 335         return &codecs[k];
 336 }
 337
 338 static void coda_get_max_dimensions(struct coda_dev *dev,
 339                                     const struct coda_codec *codec,
 340                                     int *max_w, int *max_h)
 341 {
 342         const struct coda_codec *codecs = dev->devtype->codecs;
 343         int num_codecs = dev->devtype->num_codecs;
 344         unsigned int w, h;
 345         int k;
 346
 347         if (codec) {
 348                 w = codec->max_w;
 349                 h = codec->max_h;
 350         } else {
 351                 for (k = 0, w = 0, h = 0; k < num_codecs; k++) {
 352                         w = max(w, codecs[k].max_w);
 353                         h = max(h, codecs[k].max_h);
 354                 }
 355         }
 356
 357         if (max_w)
 358                 *max_w = w;
 359         if (max_h)
 360                 *max_h = h;
 361 }
 362
 363 static const struct coda_video_device *to_coda_video_device(struct video_device
 364                                                             *vdev)
 365 {
 366         struct coda_dev *dev = video_get_drvdata(vdev);
 367         unsigned int i = vdev - dev->vfd;
 368
 369         if (i >= dev->devtype->num_vdevs)
 370                 return NULL;
 371
 372         return dev->devtype->vdevs[i];
 373 }
 374
 375 const char *coda_product_name(int product)
 376 {
 377         static char buf[9];
 378
 379         switch (product) {
 380         case CODA_DX6:
 381                 return "CodaDx6";
 382         case CODA_HX4:
 383                 return "CodaHx4";
 384         case CODA_7541:
 385                 return "CODA7541";
 386         case CODA_960:
 387                 return "CODA960";
 388         default:
 389                 snprintf(buf, sizeof(buf), "(0x%04x)", product);
 390                 return buf;
 391         }
 392 }
 393
 394 static struct vdoa_data *coda_get_vdoa_data(void)
 395 {
 396         struct device_node *vdoa_node;
 397         struct platform_device *vdoa_pdev;
 398         struct vdoa_data *vdoa_data = NULL;
 399
 400         vdoa_node = of_find_compatible_node(NULL, NULL, "fsl,imx6q-vdoa");
 401         if (!vdoa_node)
 402                 return NULL;
 403
 404         vdoa_pdev = of_find_device_by_node(vdoa_node);
 405         if (!vdoa_pdev)
 406                 goto out;
 407
 408         vdoa_data = platform_get_drvdata(vdoa_pdev);
 409         if (!vdoa_data)
 410                 vdoa_data = ERR_PTR(-EPROBE_DEFER);
 411
 412         put_device(&vdoa_pdev->dev);
 413 out:
 414         of_node_put(vdoa_node);
 415
 416         return vdoa_data;
 417 }
 418
 419 /*
 420  * V4L2 ioctl() operations.
 421  */
 422 static int coda_querycap(struct file *file, void *priv,
 423                          struct v4l2_capability *cap)
 424 {
 425         struct coda_ctx *ctx = fh_to_ctx(priv);
 426
 427         strscpy(cap->driver, CODA_NAME, sizeof(cap->driver));
 428         strscpy(cap->card, coda_product_name(ctx->dev->devtype->product),
 429                 sizeof(cap->card));
 430         strscpy(cap->bus_info, "platform:" CODA_NAME, sizeof(cap->bus_info));
 431         return 0;
 432 }
 433
 434 static const u32 coda_formats_420[CODA_MAX_FORMATS] = {
 435                 V4L2_PIX_FMT_NV12,
 436                 V4L2_PIX_FMT_YUV420,
 437                 V4L2_PIX_FMT_YVU420,
 438 };
 439
 440 static int coda_enum_fmt(struct file *file, void *priv,
 441                          struct v4l2_fmtdesc *f)
 442 {
 443         struct video_device *vdev = video_devdata(file);
 444         const struct coda_video_device *cvd = to_coda_video_device(vdev);
 445         struct coda_ctx *ctx = fh_to_ctx(priv);
 446         const u32 *formats;
 447
 448         if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
 449                 formats = cvd->src_formats;
 450         else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
 451                 struct coda_q_data *q_data_src;
 452                 struct vb2_queue *src_vq;
 453
 454                 formats = cvd->dst_formats;
 455
 456                 /*
 457                  * If the source format is already fixed, only allow the same
 458                  * chroma subsampling.
 459                  */
 460                 q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 461                 src_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
 462                                          V4L2_BUF_TYPE_VIDEO_OUTPUT);
 463                 if (q_data_src->fourcc == V4L2_PIX_FMT_JPEG &&
 464                     vb2_is_streaming(src_vq)) {
 465                         if (ctx->params.jpeg_chroma_subsampling ==
 466                             V4L2_JPEG_CHROMA_SUBSAMPLING_420) {
 467                                 formats = coda_formats_420;
 468                         } else if (ctx->params.jpeg_chroma_subsampling ==
 469                                    V4L2_JPEG_CHROMA_SUBSAMPLING_422) {
 470                                 f->pixelformat = V4L2_PIX_FMT_YUV422P;
 471                                 return f->index ? -EINVAL : 0;
 472                         }
 473                 }
 474         } else {
 475                 return -EINVAL;
 476         }
 477
 478         if (f->index >= CODA_MAX_FORMATS || formats[f->index] == 0)
 479                 return -EINVAL;
 480
 481         /* Skip YUYV if the vdoa is not available */
 482         if (!ctx->vdoa && f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
 483             formats[f->index] == V4L2_PIX_FMT_YUYV)
 484                 return -EINVAL;
 485
 486         f->pixelformat = formats[f->index];
 487
 488         return 0;
 489 }
 490
 491 static int coda_g_fmt(struct file *file, void *priv,
 492                       struct v4l2_format *f)
 493 {
 494         struct coda_q_data *q_data;
 495         struct coda_ctx *ctx = fh_to_ctx(priv);
 496
 497         q_data = get_q_data(ctx, f->type);
 498         if (!q_data)
 499                 return -EINVAL;
 500
 501         f->fmt.pix.field        = V4L2_FIELD_NONE;
 502         f->fmt.pix.pixelformat  = q_data->fourcc;
 503         f->fmt.pix.width        = q_data->width;
 504         f->fmt.pix.height       = q_data->height;
 505         f->fmt.pix.bytesperline = q_data->bytesperline;
 506
 507         f->fmt.pix.sizeimage    = q_data->sizeimage;
 508         f->fmt.pix.colorspace   = ctx->colorspace;
 509         f->fmt.pix.xfer_func    = ctx->xfer_func;
 510         f->fmt.pix.ycbcr_enc    = ctx->ycbcr_enc;
 511         f->fmt.pix.quantization = ctx->quantization;
 512
 513         return 0;
 514 }
 515
 516 static int coda_try_pixelformat(struct coda_ctx *ctx, struct v4l2_format *f)
 517 {
 518         struct coda_q_data *q_data;
 519         const u32 *formats;
 520         int i;
 521
 522         if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
 523                 formats = ctx->cvd->src_formats;
 524         else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
 525                 formats = ctx->cvd->dst_formats;
 526         else
 527                 return -EINVAL;
 528
 529         for (i = 0; i < CODA_MAX_FORMATS; i++) {
 530                 /* Skip YUYV if the vdoa is not available */
 531                 if (!ctx->vdoa && f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
 532                     formats[i] == V4L2_PIX_FMT_YUYV)
 533                         continue;
 534
 535                 if (formats[i] == f->fmt.pix.pixelformat) {
 536                         f->fmt.pix.pixelformat = formats[i];
 537                         return 0;
 538                 }
 539         }
 540
 541         /* Fall back to currently set pixelformat */
 542         q_data = get_q_data(ctx, f->type);
 543         f->fmt.pix.pixelformat = q_data->fourcc;
 544
 545         return 0;
 546 }
 547
 548 static int coda_try_fmt_vdoa(struct coda_ctx *ctx, struct v4l2_format *f,
 549                              bool *use_vdoa)
 550 {
 551         int err;
 552
 553         if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 554                 return -EINVAL;
 555
 556         if (!use_vdoa)
 557                 return -EINVAL;
 558
 559         if (!ctx->vdoa) {
 560                 *use_vdoa = false;
 561                 return 0;
 562         }
 563
 564         err = vdoa_context_configure(NULL, round_up(f->fmt.pix.width, 16),
 565                                      f->fmt.pix.height, f->fmt.pix.pixelformat);
 566         if (err) {
 567                 *use_vdoa = false;
 568                 return 0;
 569         }
 570
 571         *use_vdoa = true;
 572         return 0;
 573 }
 574
 575 static unsigned int coda_estimate_sizeimage(struct coda_ctx *ctx, u32 sizeimage,
 576                                             u32 width, u32 height)
 577 {
 578         /*
 579          * This is a rough estimate for sensible compressed buffer
 580          * sizes (between 1 and 16 bits per pixel). This could be
 581          * improved by better format specific worst case estimates.
 582          */
 583         return round_up(clamp(sizeimage, width * height / 8,
 584                                          width * height * 2), PAGE_SIZE);
 585 }
 586
 587 static int coda_try_fmt(struct coda_ctx *ctx, const struct coda_codec *codec,
 588                         struct v4l2_format *f)
 589 {
 590         struct coda_dev *dev = ctx->dev;
 591         unsigned int max_w, max_h;
 592         enum v4l2_field field;
 593
 594         field = f->fmt.pix.field;
 595         if (field == V4L2_FIELD_ANY)
 596                 field = V4L2_FIELD_NONE;
 597         else if (V4L2_FIELD_NONE != field)
 598                 return -EINVAL;
 599
 600         /* V4L2 specification suggests the driver corrects the format struct
 601          * if any of the dimensions is unsupported */
 602         f->fmt.pix.field = field;
 603
 604         coda_get_max_dimensions(dev, codec, &max_w, &max_h);
 605         v4l_bound_align_image(&f->fmt.pix.width, MIN_W, max_w, W_ALIGN,
 606                               &f->fmt.pix.height, MIN_H, max_h, H_ALIGN,
 607                               S_ALIGN);
 608
 609         switch (f->fmt.pix.pixelformat) {
 610         case V4L2_PIX_FMT_NV12:
 611         case V4L2_PIX_FMT_YUV420:
 612         case V4L2_PIX_FMT_YVU420:
 613                 /*
 614                  * Frame stride must be at least multiple of 8,
 615                  * but multiple of 16 for h.264 or JPEG 4:2:x
 616                  */
 617                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
 618                 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 619                                         f->fmt.pix.height * 3 / 2;
 620                 break;
 621         case V4L2_PIX_FMT_YUYV:
 622                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16) * 2;
 623                 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 624                                         f->fmt.pix.height;
 625                 break;
 626         case V4L2_PIX_FMT_YUV422P:
 627                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
 628                 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 629                                         f->fmt.pix.height * 2;
 630                 break;
 631         case V4L2_PIX_FMT_GREY:
 632                 /* keep 16 pixel alignment of 8-bit pixel data */
 633                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16);
 634                 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height;
 635                 break;
 636         case V4L2_PIX_FMT_JPEG:
 637         case V4L2_PIX_FMT_H264:
 638         case V4L2_PIX_FMT_MPEG4:
 639         case V4L2_PIX_FMT_MPEG2:
 640                 f->fmt.pix.bytesperline = 0;
 641                 f->fmt.pix.sizeimage = coda_estimate_sizeimage(ctx,
 642                                                         f->fmt.pix.sizeimage,
 643                                                         f->fmt.pix.width,
 644                                                         f->fmt.pix.height);
 645                 break;
 646         default:
 647                 BUG();
 648         }
 649
 650         return 0;
 651 }
 652
 653 static int coda_try_fmt_vid_cap(struct file *file, void *priv,
 654                                 struct v4l2_format *f)
 655 {
 656         struct coda_ctx *ctx = fh_to_ctx(priv);
 657         const struct coda_q_data *q_data_src;
 658         const struct coda_codec *codec;
 659         struct vb2_queue *src_vq;
 660         int hscale = 0;
 661         int vscale = 0;
 662         int ret;
 663         bool use_vdoa;
 664
 665         ret = coda_try_pixelformat(ctx, f);
 666         if (ret < 0)
 667                 return ret;
 668
 669         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 670
 671         /*
 672          * If the source format is already fixed, only allow the same output
 673          * resolution. When decoding JPEG images, we also have to make sure to
 674          * use the same chroma subsampling.
 675          */
 676         src_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 677         if (vb2_is_streaming(src_vq)) {
 678                 if (q_data_src->fourcc == V4L2_PIX_FMT_JPEG &&
 679                     ctx->dev->devtype->product == CODA_960) {
 680                         hscale = coda_jpeg_scale(q_data_src->width, f->fmt.pix.width);
 681                         vscale = coda_jpeg_scale(q_data_src->height, f->fmt.pix.height);
 682                 }
 683                 f->fmt.pix.width = q_data_src->width >> hscale;
 684                 f->fmt.pix.height = q_data_src->height >> vscale;
 685
 686                 if (q_data_src->fourcc == V4L2_PIX_FMT_JPEG) {
 687                         if (ctx->params.jpeg_chroma_subsampling ==
 688                             V4L2_JPEG_CHROMA_SUBSAMPLING_420 &&
 689                             f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUV422P)
 690                                 f->fmt.pix.pixelformat = V4L2_PIX_FMT_NV12;
 691                         else if (ctx->params.jpeg_chroma_subsampling ==
 692                                  V4L2_JPEG_CHROMA_SUBSAMPLING_422)
 693                                 f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P;
 694                 }
 695         }
 696
 697         f->fmt.pix.colorspace = ctx->colorspace;
 698         f->fmt.pix.xfer_func = ctx->xfer_func;
 699         f->fmt.pix.ycbcr_enc = ctx->ycbcr_enc;
 700         f->fmt.pix.quantization = ctx->quantization;
 701
 702         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 703         codec = coda_find_codec(ctx->dev, q_data_src->fourcc,
 704                                 f->fmt.pix.pixelformat);
 705         if (!codec)
 706                 return -EINVAL;
 707
 708         ret = coda_try_fmt(ctx, codec, f);
 709         if (ret < 0)
 710                 return ret;
 711
 712         /* The decoders always write complete macroblocks or MCUs */
 713         if (ctx->inst_type == CODA_INST_DECODER) {
 714                 f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16 >> hscale);
 715                 f->fmt.pix.height = round_up(f->fmt.pix.height, 16 >> vscale);
 716                 if (codec->src_fourcc == V4L2_PIX_FMT_JPEG &&
 717                     f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUV422P) {
 718                         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 719                                                f->fmt.pix.height * 2;
 720                 } else {
 721                         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 722                                                f->fmt.pix.height * 3 / 2;
 723                 }
 724
 725                 ret = coda_try_fmt_vdoa(ctx, f, &use_vdoa);
 726                 if (ret < 0)
 727                         return ret;
 728
 729                 if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUYV) {
 730                         if (!use_vdoa)
 731                                 return -EINVAL;
 732
 733                         f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 16) * 2;
 734                         f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
 735                                 f->fmt.pix.height;
 736                 }
 737         }
 738
 739         return 0;
 740 }
 741
 742 static void coda_set_default_colorspace(struct v4l2_pix_format *fmt)
 743 {
 744         enum v4l2_colorspace colorspace;
 745
 746         if (fmt->pixelformat == V4L2_PIX_FMT_JPEG)
 747                 colorspace = V4L2_COLORSPACE_JPEG;
 748         else if (fmt->width <= 720 && fmt->height <= 576)
 749                 colorspace = V4L2_COLORSPACE_SMPTE170M;
 750         else
 751                 colorspace = V4L2_COLORSPACE_REC709;
 752
 753         fmt->colorspace = colorspace;
 754         fmt->xfer_func = V4L2_XFER_FUNC_DEFAULT;
 755         fmt->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
 756         fmt->quantization = V4L2_QUANTIZATION_DEFAULT;
 757 }
 758
 759 static int coda_try_fmt_vid_out(struct file *file, void *priv,
 760                                 struct v4l2_format *f)
 761 {
 762         struct coda_ctx *ctx = fh_to_ctx(priv);
 763         struct coda_dev *dev = ctx->dev;
 764         const struct coda_q_data *q_data_dst;
 765         const struct coda_codec *codec;
 766         int ret;
 767
 768         ret = coda_try_pixelformat(ctx, f);
 769         if (ret < 0)
 770                 return ret;
 771
 772         if (f->fmt.pix.colorspace == V4L2_COLORSPACE_DEFAULT)
 773                 coda_set_default_colorspace(&f->fmt.pix);
 774
 775         q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
 776         codec = coda_find_codec(dev, f->fmt.pix.pixelformat, q_data_dst->fourcc);
 777
 778         return coda_try_fmt(ctx, codec, f);
 779 }
 780
 781 static int coda_s_fmt(struct coda_ctx *ctx, struct v4l2_format *f,
 782                       struct v4l2_rect *r)
 783 {
 784         struct coda_q_data *q_data;
 785         struct vb2_queue *vq;
 786
 787         vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
 788         if (!vq)
 789                 return -EINVAL;
 790
 791         q_data = get_q_data(ctx, f->type);
 792         if (!q_data)
 793                 return -EINVAL;
 794
 795         if (vb2_is_busy(vq)) {
 796                 v4l2_err(&ctx->dev->v4l2_dev, "%s: %s queue busy: %d\n",
 797                          __func__, v4l2_type_names[f->type], vq->num_buffers);
 798                 return -EBUSY;
 799         }
 800
 801         q_data->fourcc = f->fmt.pix.pixelformat;
 802         q_data->width = f->fmt.pix.width;
 803         q_data->height = f->fmt.pix.height;
 804         q_data->bytesperline = f->fmt.pix.bytesperline;
 805         q_data->sizeimage = f->fmt.pix.sizeimage;
 806         if (r) {
 807                 q_data->rect = *r;
 808         } else {
 809                 q_data->rect.left = 0;
 810                 q_data->rect.top = 0;
 811                 q_data->rect.width = f->fmt.pix.width;
 812                 q_data->rect.height = f->fmt.pix.height;
 813         }
 814
 815         switch (f->fmt.pix.pixelformat) {
 816         case V4L2_PIX_FMT_YUYV:
 817                 ctx->tiled_map_type = GDI_TILED_FRAME_MB_RASTER_MAP;
 818                 break;
 819         case V4L2_PIX_FMT_NV12:
 820                 if (!disable_tiling && ctx->use_bit &&
 821                     ctx->dev->devtype->product == CODA_960) {
 822                         ctx->tiled_map_type = GDI_TILED_FRAME_MB_RASTER_MAP;
 823                         break;
 824                 }
 825                 fallthrough;
 826         case V4L2_PIX_FMT_YUV420:
 827         case V4L2_PIX_FMT_YVU420:
 828         case V4L2_PIX_FMT_YUV422P:
 829                 ctx->tiled_map_type = GDI_LINEAR_FRAME_MAP;
 830                 break;
 831         default:
 832                 break;
 833         }
 834
 835         if (ctx->tiled_map_type == GDI_TILED_FRAME_MB_RASTER_MAP &&
 836             !coda_try_fmt_vdoa(ctx, f, &ctx->use_vdoa) &&
 837             ctx->use_vdoa)
 838                 vdoa_context_configure(ctx->vdoa,
 839                                        round_up(f->fmt.pix.width, 16),
 840                                        f->fmt.pix.height,
 841                                        f->fmt.pix.pixelformat);
 842         else
 843                 ctx->use_vdoa = false;
 844
 845         coda_dbg(1, ctx, "Setting %s format, wxh: %dx%d, fmt: %4.4s %c\n",
 846                  v4l2_type_names[f->type], q_data->width, q_data->height,
 847                  (char *)&q_data->fourcc,
 848                  (ctx->tiled_map_type == GDI_LINEAR_FRAME_MAP) ? 'L' : 'T');
 849
 850         return 0;
 851 }
 852
 853 static int coda_s_fmt_vid_cap(struct file *file, void *priv,
 854                               struct v4l2_format *f)
 855 {
 856         struct coda_ctx *ctx = fh_to_ctx(priv);
 857         struct coda_q_data *q_data_src;
 858         const struct coda_codec *codec;
 859         struct v4l2_rect r;
 860         int hscale = 0;
 861         int vscale = 0;
 862         int ret;
 863
 864         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
 865
 866         if (q_data_src->fourcc == V4L2_PIX_FMT_JPEG &&
 867             ctx->dev->devtype->product == CODA_960) {
 868                 hscale = coda_jpeg_scale(q_data_src->width, f->fmt.pix.width);
 869                 vscale = coda_jpeg_scale(q_data_src->height, f->fmt.pix.height);
 870         }
 871
 872         ret = coda_try_fmt_vid_cap(file, priv, f);
 873         if (ret)
 874                 return ret;
 875
 876         r.left = 0;
 877         r.top = 0;
 878         r.width = q_data_src->width >> hscale;
 879         r.height = q_data_src->height >> vscale;
 880
 881         ret = coda_s_fmt(ctx, f, &r);
 882         if (ret)
 883                 return ret;
 884
 885         if (ctx->inst_type != CODA_INST_ENCODER)
 886                 return 0;
 887
 888         /* Setting the coded format determines the selected codec */
 889         codec = coda_find_codec(ctx->dev, q_data_src->fourcc,
 890                                 f->fmt.pix.pixelformat);
 891         if (!codec) {
 892                 v4l2_err(&ctx->dev->v4l2_dev, "failed to determine codec\n");
 893                 return -EINVAL;
 894         }
 895         ctx->codec = codec;
 896
 897         ctx->colorspace = f->fmt.pix.colorspace;
 898         ctx->xfer_func = f->fmt.pix.xfer_func;
 899         ctx->ycbcr_enc = f->fmt.pix.ycbcr_enc;
 900         ctx->quantization = f->fmt.pix.quantization;
 901
 902         return 0;
 903 }
 904
 905 static int coda_s_fmt_vid_out(struct file *file, void *priv,
 906                               struct v4l2_format *f)
 907 {
 908         struct coda_ctx *ctx = fh_to_ctx(priv);
 909         const struct coda_codec *codec;
 910         struct v4l2_format f_cap;
 911         struct vb2_queue *dst_vq;
 912         int ret;
 913
 914         ret = coda_try_fmt_vid_out(file, priv, f);
 915         if (ret)
 916                 return ret;
 917
 918         ret = coda_s_fmt(ctx, f, NULL);
 919         if (ret)
 920                 return ret;
 921
 922         ctx->colorspace = f->fmt.pix.colorspace;
 923         ctx->xfer_func = f->fmt.pix.xfer_func;
 924         ctx->ycbcr_enc = f->fmt.pix.ycbcr_enc;
 925         ctx->quantization = f->fmt.pix.quantization;
 926
 927         if (ctx->inst_type != CODA_INST_DECODER)
 928                 return 0;
 929
 930         /* Setting the coded format determines the selected codec */
 931         codec = coda_find_codec(ctx->dev, f->fmt.pix.pixelformat,
 932                                 V4L2_PIX_FMT_YUV420);
 933         if (!codec) {
 934                 v4l2_err(&ctx->dev->v4l2_dev, "failed to determine codec\n");
 935                 return -EINVAL;
 936         }
 937         ctx->codec = codec;
 938
 939         dst_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
 940         if (!dst_vq)
 941                 return -EINVAL;
 942
 943         /*
 944          * Setting the capture queue format is not possible while the capture
 945          * queue is still busy. This is not an error, but the user will have to
 946          * make sure themselves that the capture format is set correctly before
 947          * starting the output queue again.
 948          */
 949         if (vb2_is_busy(dst_vq))
 950                 return 0;
 951
 952         memset(&f_cap, 0, sizeof(f_cap));
 953         f_cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 954         coda_g_fmt(file, priv, &f_cap);
 955         f_cap.fmt.pix.width = f->fmt.pix.width;
 956         f_cap.fmt.pix.height = f->fmt.pix.height;
 957
 958         return coda_s_fmt_vid_cap(file, priv, &f_cap);
 959 }
 960
 961 static int coda_reqbufs(struct file *file, void *priv,
 962                         struct v4l2_requestbuffers *rb)
 963 {
 964         struct coda_ctx *ctx = fh_to_ctx(priv);
 965         int ret;
 966
 967         ret = v4l2_m2m_reqbufs(file, ctx->fh.m2m_ctx, rb);
 968         if (ret)
 969                 return ret;
 970
 971         /*
 972          * Allow to allocate instance specific per-context buffers, such as
 973          * bitstream ringbuffer, slice buffer, work buffer, etc. if needed.
 974          */
 975         if (rb->type == V4L2_BUF_TYPE_VIDEO_OUTPUT && ctx->ops->reqbufs)
 976                 return ctx->ops->reqbufs(ctx, rb);
 977
 978         return 0;
 979 }
 980
 981 static int coda_qbuf(struct file *file, void *priv,
 982                      struct v4l2_buffer *buf)
 983 {
 984         struct coda_ctx *ctx = fh_to_ctx(priv);
 985
 986         if (ctx->inst_type == CODA_INST_DECODER &&
 987             buf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
 988                 buf->flags &= ~V4L2_BUF_FLAG_LAST;
 989
 990         return v4l2_m2m_qbuf(file, ctx->fh.m2m_ctx, buf);
 991 }
 992
 993 static int coda_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
 994 {
 995         struct coda_ctx *ctx = fh_to_ctx(priv);
 996         int ret;
 997
 998         ret = v4l2_m2m_dqbuf(file, ctx->fh.m2m_ctx, buf);
 999
1000         if (ctx->inst_type == CODA_INST_DECODER &&
1001             buf->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1002                 buf->flags &= ~V4L2_BUF_FLAG_LAST;
1003
1004         return ret;
1005 }
1006
1007 void coda_m2m_buf_done(struct coda_ctx *ctx, struct vb2_v4l2_buffer *buf,
1008                        enum vb2_buffer_state state)
1009 {
1010         const struct v4l2_event eos_event = {
1011                 .type = V4L2_EVENT_EOS
1012         };
1013
1014         if (buf->flags & V4L2_BUF_FLAG_LAST)
1015                 v4l2_event_queue_fh(&ctx->fh, &eos_event);
1016
1017         v4l2_m2m_buf_done(buf, state);
1018 }
1019
1020 static int coda_g_selection(struct file *file, void *fh,
1021                             struct v4l2_selection *s)
1022 {
1023         struct coda_ctx *ctx = fh_to_ctx(fh);
1024         struct coda_q_data *q_data;
1025         struct v4l2_rect r, *rsel;
1026
1027         q_data = get_q_data(ctx, s->type);
1028         if (!q_data)
1029                 return -EINVAL;
1030
1031         r.left = 0;
1032         r.top = 0;
1033         r.width = q_data->width;
1034         r.height = q_data->height;
1035         rsel = &q_data->rect;
1036
1037         switch (s->target) {
1038         case V4L2_SEL_TGT_CROP_DEFAULT:
1039         case V4L2_SEL_TGT_CROP_BOUNDS:
1040                 rsel = &r;
1041                 fallthrough;
1042         case V4L2_SEL_TGT_CROP:
1043                 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT ||
1044                     ctx->inst_type == CODA_INST_DECODER)
1045                         return -EINVAL;
1046                 break;
1047         case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1048         case V4L2_SEL_TGT_COMPOSE_PADDED:
1049                 rsel = &r;
1050                 fallthrough;
1051         case V4L2_SEL_TGT_COMPOSE:
1052         case V4L2_SEL_TGT_COMPOSE_DEFAULT:
1053                 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1054                     ctx->inst_type == CODA_INST_ENCODER)
1055                         return -EINVAL;
1056                 break;
1057         default:
1058                 return -EINVAL;
1059         }
1060
1061         s->r = *rsel;
1062
1063         return 0;
1064 }
1065
1066 static int coda_s_selection(struct file *file, void *fh,
1067                             struct v4l2_selection *s)
1068 {
1069         struct coda_ctx *ctx = fh_to_ctx(fh);
1070         struct coda_q_data *q_data;
1071
1072         switch (s->target) {
1073         case V4L2_SEL_TGT_CROP:
1074                 if (ctx->inst_type == CODA_INST_ENCODER &&
1075                     s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1076                         q_data = get_q_data(ctx, s->type);
1077                         if (!q_data)
1078                                 return -EINVAL;
1079
1080                         s->r.left = 0;
1081                         s->r.top = 0;
1082                         s->r.width = clamp(s->r.width, 2U, q_data->width);
1083                         s->r.height = clamp(s->r.height, 2U, q_data->height);
1084
1085                         if (s->flags & V4L2_SEL_FLAG_LE) {
1086                                 s->r.width = round_up(s->r.width, 2);
1087                                 s->r.height = round_up(s->r.height, 2);
1088                         } else {
1089                                 s->r.width = round_down(s->r.width, 2);
1090                                 s->r.height = round_down(s->r.height, 2);
1091                         }
1092
1093                         q_data->rect = s->r;
1094
1095                         coda_dbg(1, ctx, "Setting crop rectangle: %dx%d\n",
1096                                  s->r.width, s->r.height);
1097
1098                         return 0;
1099                 }
1100                 fallthrough;
1101         case V4L2_SEL_TGT_NATIVE_SIZE:
1102         case V4L2_SEL_TGT_COMPOSE:
1103                 return coda_g_selection(file, fh, s);
1104         default:
1105                 /* v4l2-compliance expects this to fail for read-only targets */
1106                 return -EINVAL;
1107         }
1108 }
1109
1110 static void coda_wake_up_capture_queue(struct coda_ctx *ctx)
1111 {
1112         struct vb2_queue *dst_vq;
1113
1114         coda_dbg(1, ctx, "waking up capture queue\n");
1115
1116         dst_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1117         dst_vq->last_buffer_dequeued = true;
1118         wake_up(&dst_vq->done_wq);
1119 }
1120
1121 static int coda_encoder_cmd(struct file *file, void *fh,
1122                             struct v4l2_encoder_cmd *ec)
1123 {
1124         struct coda_ctx *ctx = fh_to_ctx(fh);
1125         struct vb2_v4l2_buffer *buf;
1126         int ret;
1127
1128         ret = v4l2_m2m_ioctl_try_encoder_cmd(file, fh, ec);
1129         if (ret < 0)
1130                 return ret;
1131
1132         mutex_lock(&ctx->wakeup_mutex);
1133         buf = v4l2_m2m_last_src_buf(ctx->fh.m2m_ctx);
1134         if (buf) {
1135                 /*
1136                  * If the last output buffer is still on the queue, make sure
1137                  * that decoder finish_run will see the last flag and report it
1138                  * to userspace.
1139                  */
1140                 buf->flags |= V4L2_BUF_FLAG_LAST;
1141         } else {
1142                 /* Set the stream-end flag on this context */
1143                 ctx->bit_stream_param |= CODA_BIT_STREAM_END_FLAG;
1144
1145                 /*
1146                  * If the last output buffer has already been taken from the
1147                  * queue, wake up the capture queue and signal end of stream
1148                  * via the -EPIPE mechanism.
1149                  */
1150                 coda_wake_up_capture_queue(ctx);
1151         }
1152         mutex_unlock(&ctx->wakeup_mutex);
1153
1154         return 0;
1155 }
1156
1157 static bool coda_mark_last_meta(struct coda_ctx *ctx)
1158 {
1159         struct coda_buffer_meta *meta;
1160
1161         coda_dbg(1, ctx, "marking last meta\n");
1162
1163         spin_lock(&ctx->buffer_meta_lock);
1164         if (list_empty(&ctx->buffer_meta_list)) {
1165                 spin_unlock(&ctx->buffer_meta_lock);
1166                 return false;
1167         }
1168
1169         meta = list_last_entry(&ctx->buffer_meta_list, struct coda_buffer_meta,
1170                                list);
1171         meta->last = true;
1172
1173         spin_unlock(&ctx->buffer_meta_lock);
1174         return true;
1175 }
1176
1177 static bool coda_mark_last_dst_buf(struct coda_ctx *ctx)
1178 {
1179         struct vb2_v4l2_buffer *buf;
1180         struct vb2_buffer *dst_vb;
1181         struct vb2_queue *dst_vq;
1182         unsigned long flags;
1183
1184         coda_dbg(1, ctx, "marking last capture buffer\n");
1185
1186         dst_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1187         spin_lock_irqsave(&dst_vq->done_lock, flags);
1188         if (list_empty(&dst_vq->done_list)) {
1189                 spin_unlock_irqrestore(&dst_vq->done_lock, flags);
1190                 return false;
1191         }
1192
1193         dst_vb = list_last_entry(&dst_vq->done_list, struct vb2_buffer,
1194                                  done_entry);
1195         buf = to_vb2_v4l2_buffer(dst_vb);
1196         buf->flags |= V4L2_BUF_FLAG_LAST;
1197
1198         spin_unlock_irqrestore(&dst_vq->done_lock, flags);
1199         return true;
1200 }
1201
1202 static int coda_decoder_cmd(struct file *file, void *fh,
1203                             struct v4l2_decoder_cmd *dc)
1204 {
1205         struct coda_ctx *ctx = fh_to_ctx(fh);
1206         struct coda_dev *dev = ctx->dev;
1207         struct vb2_v4l2_buffer *buf;
1208         struct vb2_queue *dst_vq;
1209         bool stream_end;
1210         bool wakeup;
1211         int ret;
1212
1213         ret = v4l2_m2m_ioctl_try_decoder_cmd(file, fh, dc);
1214         if (ret < 0)
1215                 return ret;
1216
1217         switch (dc->cmd) {
1218         case V4L2_DEC_CMD_START:
1219                 mutex_lock(&dev->coda_mutex);
1220                 mutex_lock(&ctx->bitstream_mutex);
1221                 coda_bitstream_flush(ctx);
1222                 dst_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
1223                                          V4L2_BUF_TYPE_VIDEO_CAPTURE);
1224                 vb2_clear_last_buffer_dequeued(dst_vq);
1225                 ctx->bit_stream_param &= ~CODA_BIT_STREAM_END_FLAG;
1226                 coda_fill_bitstream(ctx, NULL);
1227                 mutex_unlock(&ctx->bitstream_mutex);
1228                 mutex_unlock(&dev->coda_mutex);
1229                 break;
1230         case V4L2_DEC_CMD_STOP:
1231                 stream_end = false;
1232                 wakeup = false;
1233
1234                 mutex_lock(&ctx->wakeup_mutex);
1235
1236                 buf = v4l2_m2m_last_src_buf(ctx->fh.m2m_ctx);
1237                 if (buf) {
1238                         coda_dbg(1, ctx, "marking last pending buffer\n");
1239
1240                         /* Mark last buffer */
1241                         buf->flags |= V4L2_BUF_FLAG_LAST;
1242
1243                         if (v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx) == 0) {
1244                                 coda_dbg(1, ctx, "all remaining buffers queued\n");
1245                                 stream_end = true;
1246                         }
1247                 } else {
1248                         if (ctx->use_bit)
1249                                 if (coda_mark_last_meta(ctx))
1250                                         stream_end = true;
1251                                 else
1252                                         wakeup = true;
1253                         else
1254                                 if (!coda_mark_last_dst_buf(ctx))
1255                                         wakeup = true;
1256                 }
1257
1258                 if (stream_end) {
1259                         coda_dbg(1, ctx, "all remaining buffers queued\n");
1260
1261                         /* Set the stream-end flag on this context */
1262                         coda_bit_stream_end_flag(ctx);
1263                         ctx->hold = false;
1264                         v4l2_m2m_try_schedule(ctx->fh.m2m_ctx);
1265                 }
1266
1267                 if (wakeup) {
1268                         /* If there is no buffer in flight, wake up */
1269                         coda_wake_up_capture_queue(ctx);
1270                 }
1271
1272                 mutex_unlock(&ctx->wakeup_mutex);
1273                 break;
1274         default:
1275                 return -EINVAL;
1276         }
1277
1278         return 0;
1279 }
1280
1281 static int coda_enum_framesizes(struct file *file, void *fh,
1282                                 struct v4l2_frmsizeenum *fsize)
1283 {
1284         struct coda_ctx *ctx = fh_to_ctx(fh);
1285         struct coda_q_data *q_data_dst;
1286         const struct coda_codec *codec;
1287
1288         if (fsize->index)
1289                 return -EINVAL;
1290
1291         if (coda_format_normalize_yuv(fsize->pixel_format) ==
1292             V4L2_PIX_FMT_YUV420) {
1293                 q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1294                 codec = coda_find_codec(ctx->dev, fsize->pixel_format,
1295                                         q_data_dst->fourcc);
1296         } else {
1297                 codec = coda_find_codec(ctx->dev, V4L2_PIX_FMT_YUV420,
1298                                         fsize->pixel_format);
1299         }
1300         if (!codec)
1301                 return -EINVAL;
1302
1303         fsize->type = V4L2_FRMSIZE_TYPE_CONTINUOUS;
1304         fsize->stepwise.min_width = MIN_W;
1305         fsize->stepwise.max_width = codec->max_w;
1306         fsize->stepwise.step_width = 1;
1307         fsize->stepwise.min_height = MIN_H;
1308         fsize->stepwise.max_height = codec->max_h;
1309         fsize->stepwise.step_height = 1;
1310
1311         return 0;
1312 }
1313
1314 static int coda_enum_frameintervals(struct file *file, void *fh,
1315                                     struct v4l2_frmivalenum *f)
1316 {
1317         struct coda_ctx *ctx = fh_to_ctx(fh);
1318         struct coda_q_data *q_data;
1319         const struct coda_codec *codec;
1320
1321         if (f->index)
1322                 return -EINVAL;
1323
1324         /* Disallow YUYV if the vdoa is not available */
1325         if (!ctx->vdoa && f->pixel_format == V4L2_PIX_FMT_YUYV)
1326                 return -EINVAL;
1327
1328         if (coda_format_normalize_yuv(f->pixel_format) == V4L2_PIX_FMT_YUV420) {
1329                 q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1330                 codec = coda_find_codec(ctx->dev, f->pixel_format,
1331                                         q_data->fourcc);
1332         } else {
1333                 codec = coda_find_codec(ctx->dev, V4L2_PIX_FMT_YUV420,
1334                                         f->pixel_format);
1335         }
1336         if (!codec)
1337                 return -EINVAL;
1338
1339         if (f->width < MIN_W || f->width > codec->max_w ||
1340             f->height < MIN_H || f->height > codec->max_h)
1341                 return -EINVAL;
1342
1343         f->type = V4L2_FRMIVAL_TYPE_CONTINUOUS;
1344         f->stepwise.min.numerator = 1;
1345         f->stepwise.min.denominator = 65535;
1346         f->stepwise.max.numerator = 65536;
1347         f->stepwise.max.denominator = 1;
1348         f->stepwise.step.numerator = 1;
1349         f->stepwise.step.denominator = 1;
1350
1351         return 0;
1352 }
1353
1354 static int coda_g_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
1355 {
1356         struct coda_ctx *ctx = fh_to_ctx(fh);
1357         struct v4l2_fract *tpf;
1358
1359         if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1360                 return -EINVAL;
1361
1362         a->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
1363         tpf = &a->parm.output.timeperframe;
1364         tpf->denominator = ctx->params.framerate & CODA_FRATE_RES_MASK;
1365         tpf->numerator = 1 + (ctx->params.framerate >>
1366                               CODA_FRATE_DIV_OFFSET);
1367
1368         return 0;
1369 }
1370
1371 /*
1372  * Approximate timeperframe v4l2_fract with values that can be written
1373  * into the 16-bit CODA_FRATE_DIV and CODA_FRATE_RES fields.
1374  */
1375 static void coda_approximate_timeperframe(struct v4l2_fract *timeperframe)
1376 {
1377         struct v4l2_fract s = *timeperframe;
1378         struct v4l2_fract f0;
1379         struct v4l2_fract f1 = { 1, 0 };
1380         struct v4l2_fract f2 = { 0, 1 };
1381         unsigned int i, div, s_denominator;
1382
1383         /* Lower bound is 1/65535 */
1384         if (s.numerator == 0 || s.denominator / s.numerator > 65535) {
1385                 timeperframe->numerator = 1;
1386                 timeperframe->denominator = 65535;
1387                 return;
1388         }
1389
1390         /* Upper bound is 65536/1 */
1391         if (s.denominator == 0 || s.numerator / s.denominator > 65536) {
1392                 timeperframe->numerator = 65536;
1393                 timeperframe->denominator = 1;
1394                 return;
1395         }
1396
1397         /* Reduce fraction to lowest terms */
1398         div = gcd(s.numerator, s.denominator);
1399         if (div > 1) {
1400                 s.numerator /= div;
1401                 s.denominator /= div;
1402         }
1403
1404         if (s.numerator <= 65536 && s.denominator < 65536) {
1405                 *timeperframe = s;
1406                 return;
1407         }
1408
1409         /* Find successive convergents from continued fraction expansion */
1410         while (f2.numerator <= 65536 && f2.denominator < 65536) {
1411                 f0 = f1;
1412                 f1 = f2;
1413
1414                 /* Stop when f2 exactly equals timeperframe */
1415                 if (s.numerator == 0)
1416                         break;
1417
1418                 i = s.denominator / s.numerator;
1419
1420                 f2.numerator = f0.numerator + i * f1.numerator;
1421                 f2.denominator = f0.denominator + i * f2.denominator;
1422
1423                 s_denominator = s.numerator;
1424                 s.numerator = s.denominator % s.numerator;
1425                 s.denominator = s_denominator;
1426         }
1427
1428         *timeperframe = f1;
1429 }
1430
1431 static uint32_t coda_timeperframe_to_frate(struct v4l2_fract *timeperframe)
1432 {
1433         return ((timeperframe->numerator - 1) << CODA_FRATE_DIV_OFFSET) |
1434                 timeperframe->denominator;
1435 }
1436
1437 static int coda_s_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
1438 {
1439         struct coda_ctx *ctx = fh_to_ctx(fh);
1440         struct v4l2_fract *tpf;
1441
1442         if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1443                 return -EINVAL;
1444
1445         a->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
1446         tpf = &a->parm.output.timeperframe;
1447         coda_approximate_timeperframe(tpf);
1448         ctx->params.framerate = coda_timeperframe_to_frate(tpf);
1449         ctx->params.framerate_changed = true;
1450
1451         return 0;
1452 }
1453
1454 static int coda_subscribe_event(struct v4l2_fh *fh,
1455                                 const struct v4l2_event_subscription *sub)
1456 {
1457         struct coda_ctx *ctx = fh_to_ctx(fh);
1458
1459         switch (sub->type) {
1460         case V4L2_EVENT_EOS:
1461                 return v4l2_event_subscribe(fh, sub, 0, NULL);
1462         case V4L2_EVENT_SOURCE_CHANGE:
1463                 if (ctx->inst_type == CODA_INST_DECODER)
1464                         return v4l2_event_subscribe(fh, sub, 0, NULL);
1465                 else
1466                         return -EINVAL;
1467         default:
1468                 return v4l2_ctrl_subscribe_event(fh, sub);
1469         }
1470 }
1471
1472 static const struct v4l2_ioctl_ops coda_ioctl_ops = {
1473         .vidioc_querycap        = coda_querycap,
1474
1475         .vidioc_enum_fmt_vid_cap = coda_enum_fmt,
1476         .vidioc_g_fmt_vid_cap   = coda_g_fmt,
1477         .vidioc_try_fmt_vid_cap = coda_try_fmt_vid_cap,
1478         .vidioc_s_fmt_vid_cap   = coda_s_fmt_vid_cap,
1479
1480         .vidioc_enum_fmt_vid_out = coda_enum_fmt,
1481         .vidioc_g_fmt_vid_out   = coda_g_fmt,
1482         .vidioc_try_fmt_vid_out = coda_try_fmt_vid_out,
1483         .vidioc_s_fmt_vid_out   = coda_s_fmt_vid_out,
1484
1485         .vidioc_reqbufs         = coda_reqbufs,
1486         .vidioc_querybuf        = v4l2_m2m_ioctl_querybuf,
1487
1488         .vidioc_qbuf            = coda_qbuf,
1489         .vidioc_expbuf          = v4l2_m2m_ioctl_expbuf,
1490         .vidioc_dqbuf           = coda_dqbuf,
1491         .vidioc_create_bufs     = v4l2_m2m_ioctl_create_bufs,
1492         .vidioc_prepare_buf     = v4l2_m2m_ioctl_prepare_buf,
1493
1494         .vidioc_streamon        = v4l2_m2m_ioctl_streamon,
1495         .vidioc_streamoff       = v4l2_m2m_ioctl_streamoff,
1496
1497         .vidioc_g_selection     = coda_g_selection,
1498         .vidioc_s_selection     = coda_s_selection,
1499
1500         .vidioc_try_encoder_cmd = v4l2_m2m_ioctl_try_encoder_cmd,
1501         .vidioc_encoder_cmd     = coda_encoder_cmd,
1502         .vidioc_try_decoder_cmd = v4l2_m2m_ioctl_try_decoder_cmd,
1503         .vidioc_decoder_cmd     = coda_decoder_cmd,
1504
1505         .vidioc_g_parm          = coda_g_parm,
1506         .vidioc_s_parm          = coda_s_parm,
1507
1508         .vidioc_enum_framesizes = coda_enum_framesizes,
1509         .vidioc_enum_frameintervals = coda_enum_frameintervals,
1510
1511         .vidioc_subscribe_event = coda_subscribe_event,
1512         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1513 };
1514
1515 /*
1516  * Mem-to-mem operations.
1517  */
1518
1519 static void coda_device_run(void *m2m_priv)
1520 {
1521         struct coda_ctx *ctx = m2m_priv;
1522         struct coda_dev *dev = ctx->dev;
1523
1524         queue_work(dev->workqueue, &ctx->pic_run_work);
1525 }
1526
1527 static void coda_pic_run_work(struct work_struct *work)
1528 {
1529         struct coda_ctx *ctx = container_of(work, struct coda_ctx, pic_run_work);
1530         struct coda_dev *dev = ctx->dev;
1531         int ret;
1532
1533         mutex_lock(&ctx->buffer_mutex);
1534         mutex_lock(&dev->coda_mutex);
1535
1536         ret = ctx->ops->prepare_run(ctx);
1537         if (ret < 0 && ctx->inst_type == CODA_INST_DECODER)
1538                 goto out;
1539
1540         if (!wait_for_completion_timeout(&ctx->completion,
1541                                          msecs_to_jiffies(1000))) {
1542                 if (ctx->use_bit) {
1543                         dev_err(dev->dev, "CODA PIC_RUN timeout\n");
1544
1545                         ctx->hold = true;
1546
1547                         coda_hw_reset(ctx);
1548                 }
1549
1550                 if (ctx->ops->run_timeout)
1551                         ctx->ops->run_timeout(ctx);
1552         } else {
1553                 ctx->ops->finish_run(ctx);
1554         }
1555
1556         if ((ctx->aborting || (!ctx->streamon_cap && !ctx->streamon_out)) &&
1557             ctx->ops->seq_end_work)
1558                 queue_work(dev->workqueue, &ctx->seq_end_work);
1559
1560 out:
1561         mutex_unlock(&dev->coda_mutex);
1562         mutex_unlock(&ctx->buffer_mutex);
1563
1564         v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx);
1565 }
1566
1567 static int coda_job_ready(void *m2m_priv)
1568 {
1569         struct coda_ctx *ctx = m2m_priv;
1570         int src_bufs = v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx);
1571
1572         /*
1573          * For both 'P' and 'key' frame cases 1 picture
1574          * and 1 frame are needed. In the decoder case,
1575          * the compressed frame can be in the bitstream.
1576          */
1577         if (!src_bufs && ctx->inst_type != CODA_INST_DECODER) {
1578                 coda_dbg(1, ctx, "not ready: not enough vid-out buffers.\n");
1579                 return 0;
1580         }
1581
1582         if (!v4l2_m2m_num_dst_bufs_ready(ctx->fh.m2m_ctx)) {
1583                 coda_dbg(1, ctx, "not ready: not enough vid-cap buffers.\n");
1584                 return 0;
1585         }
1586
1587         if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit) {
1588                 bool stream_end = ctx->bit_stream_param &
1589                                   CODA_BIT_STREAM_END_FLAG;
1590                 int num_metas = ctx->num_metas;
1591                 struct coda_buffer_meta *meta;
1592                 unsigned int count;
1593
1594                 count = hweight32(ctx->frm_dis_flg);
1595                 if (ctx->use_vdoa && count >= (ctx->num_internal_frames - 1)) {
1596                         coda_dbg(1, ctx,
1597                                  "not ready: all internal buffers in use: %d/%d (0x%x)",
1598                                  count, ctx->num_internal_frames,
1599                                  ctx->frm_dis_flg);
1600                         return 0;
1601                 }
1602
1603                 if (ctx->hold && !src_bufs) {
1604                         coda_dbg(1, ctx,
1605                                  "not ready: on hold for more buffers.\n");
1606                         return 0;
1607                 }
1608
1609                 if (!stream_end && (num_metas + src_bufs) < 2) {
1610                         coda_dbg(1, ctx,
1611                                  "not ready: need 2 buffers available (queue:%d + bitstream:%d)\n",
1612                                  num_metas, src_bufs);
1613                         return 0;
1614                 }
1615
1616                 meta = list_first_entry(&ctx->buffer_meta_list,
1617                                         struct coda_buffer_meta, list);
1618                 if (!coda_bitstream_can_fetch_past(ctx, meta->end) &&
1619                     !stream_end) {
1620                         coda_dbg(1, ctx,
1621                                  "not ready: not enough bitstream data to read past %u (%u)\n",
1622                                  meta->end, ctx->bitstream_fifo.kfifo.in);
1623                         return 0;
1624                 }
1625         }
1626
1627         if (ctx->aborting) {
1628                 coda_dbg(1, ctx, "not ready: aborting\n");
1629                 return 0;
1630         }
1631
1632         coda_dbg(2, ctx, "job ready\n");
1633
1634         return 1;
1635 }
1636
1637 static void coda_job_abort(void *priv)
1638 {
1639         struct coda_ctx *ctx = priv;
1640
1641         ctx->aborting = 1;
1642
1643         coda_dbg(1, ctx, "job abort\n");
1644 }
1645
1646 static const struct v4l2_m2m_ops coda_m2m_ops = {
1647         .device_run     = coda_device_run,
1648         .job_ready      = coda_job_ready,
1649         .job_abort      = coda_job_abort,
1650 };
1651
1652 static void set_default_params(struct coda_ctx *ctx)
1653 {
1654         unsigned int max_w, max_h, usize, csize;
1655
1656         ctx->codec = coda_find_codec(ctx->dev, ctx->cvd->src_formats[0],
1657                                      ctx->cvd->dst_formats[0]);
1658         max_w = min(ctx->codec->max_w, 1920U);
1659         max_h = min(ctx->codec->max_h, 1088U);
1660         usize = max_w * max_h * 3 / 2;
1661         csize = coda_estimate_sizeimage(ctx, usize, max_w, max_h);
1662
1663         ctx->params.codec_mode = ctx->codec->mode;
1664         if (ctx->cvd->src_formats[0] == V4L2_PIX_FMT_JPEG ||
1665             ctx->cvd->dst_formats[0] == V4L2_PIX_FMT_JPEG) {
1666                 ctx->colorspace = V4L2_COLORSPACE_SRGB;
1667                 ctx->xfer_func = V4L2_XFER_FUNC_SRGB;
1668                 ctx->ycbcr_enc = V4L2_YCBCR_ENC_601;
1669                 ctx->quantization = V4L2_QUANTIZATION_FULL_RANGE;
1670         } else {
1671                 ctx->colorspace = V4L2_COLORSPACE_REC709;
1672                 ctx->xfer_func = V4L2_XFER_FUNC_DEFAULT;
1673                 ctx->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
1674                 ctx->quantization = V4L2_QUANTIZATION_DEFAULT;
1675         }
1676         ctx->params.framerate = 30;
1677
1678         /* Default formats for output and input queues */
1679         ctx->q_data[V4L2_M2M_SRC].fourcc = ctx->cvd->src_formats[0];
1680         ctx->q_data[V4L2_M2M_DST].fourcc = ctx->cvd->dst_formats[0];
1681         ctx->q_data[V4L2_M2M_SRC].width = max_w;
1682         ctx->q_data[V4L2_M2M_SRC].height = max_h;
1683         ctx->q_data[V4L2_M2M_DST].width = max_w;
1684         ctx->q_data[V4L2_M2M_DST].height = max_h;
1685         if (ctx->codec->src_fourcc == V4L2_PIX_FMT_YUV420) {
1686                 ctx->q_data[V4L2_M2M_SRC].bytesperline = max_w;
1687                 ctx->q_data[V4L2_M2M_SRC].sizeimage = usize;
1688                 ctx->q_data[V4L2_M2M_DST].bytesperline = 0;
1689                 ctx->q_data[V4L2_M2M_DST].sizeimage = csize;
1690         } else {
1691                 ctx->q_data[V4L2_M2M_SRC].bytesperline = 0;
1692                 ctx->q_data[V4L2_M2M_SRC].sizeimage = csize;
1693                 ctx->q_data[V4L2_M2M_DST].bytesperline = max_w;
1694                 ctx->q_data[V4L2_M2M_DST].sizeimage = usize;
1695         }
1696         ctx->q_data[V4L2_M2M_SRC].rect.width = max_w;
1697         ctx->q_data[V4L2_M2M_SRC].rect.height = max_h;
1698         ctx->q_data[V4L2_M2M_DST].rect.width = max_w;
1699         ctx->q_data[V4L2_M2M_DST].rect.height = max_h;
1700
1701         /*
1702          * Since the RBC2AXI logic only supports a single chroma plane,
1703          * macroblock tiling only works for to NV12 pixel format.
1704          */
1705         ctx->tiled_map_type = GDI_LINEAR_FRAME_MAP;
1706 }
1707
1708 /*
1709  * Queue operations
1710  */
1711 static int coda_queue_setup(struct vb2_queue *vq,
1712                                 unsigned int *nbuffers, unsigned int *nplanes,
1713                                 unsigned int sizes[], struct device *alloc_devs[])
1714 {
1715         struct coda_ctx *ctx = vb2_get_drv_priv(vq);
1716         struct coda_q_data *q_data;
1717         unsigned int size;
1718
1719         q_data = get_q_data(ctx, vq->type);
1720         size = q_data->sizeimage;
1721
1722         if (*nplanes)
1723                 return sizes[0] < size ? -EINVAL : 0;
1724
1725         *nplanes = 1;
1726         sizes[0] = size;
1727
1728         coda_dbg(1, ctx, "get %d buffer(s) of size %d each.\n", *nbuffers,
1729                  size);
1730
1731         return 0;
1732 }
1733
1734 static int coda_buf_prepare(struct vb2_buffer *vb)
1735 {
1736         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1737         struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1738         struct coda_q_data *q_data;
1739
1740         q_data = get_q_data(ctx, vb->vb2_queue->type);
1741         if (V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) {
1742                 if (vbuf->field == V4L2_FIELD_ANY)
1743                         vbuf->field = V4L2_FIELD_NONE;
1744                 if (vbuf->field != V4L2_FIELD_NONE) {
1745                         v4l2_warn(&ctx->dev->v4l2_dev,
1746                                   "%s field isn't supported\n", __func__);
1747                         return -EINVAL;
1748                 }
1749         }
1750
1751         if (vb2_plane_size(vb, 0) < q_data->sizeimage) {
1752                 v4l2_warn(&ctx->dev->v4l2_dev,
1753                           "%s data will not fit into plane (%lu < %lu)\n",
1754                           __func__, vb2_plane_size(vb, 0),
1755                           (long)q_data->sizeimage);
1756                 return -EINVAL;
1757         }
1758
1759         return 0;
1760 }
1761
1762 static void coda_update_menu_ctrl(struct v4l2_ctrl *ctrl, int value)
1763 {
1764         if (!ctrl)
1765                 return;
1766
1767         v4l2_ctrl_lock(ctrl);
1768
1769         /*
1770          * Extend the control range if the parsed stream contains a known but
1771          * unsupported value or level.
1772          */
1773         if (value > ctrl->maximum) {
1774                 __v4l2_ctrl_modify_range(ctrl, ctrl->minimum, value,
1775                         ctrl->menu_skip_mask & ~(1 << value),
1776                         ctrl->default_value);
1777         } else if (value < ctrl->minimum) {
1778                 __v4l2_ctrl_modify_range(ctrl, value, ctrl->maximum,
1779                         ctrl->menu_skip_mask & ~(1 << value),
1780                         ctrl->default_value);
1781         }
1782
1783         __v4l2_ctrl_s_ctrl(ctrl, value);
1784
1785         v4l2_ctrl_unlock(ctrl);
1786 }
1787
1788 void coda_update_profile_level_ctrls(struct coda_ctx *ctx, u8 profile_idc,
1789                                      u8 level_idc)
1790 {
1791         const char * const *profile_names;
1792         const char * const *level_names;
1793         struct v4l2_ctrl *profile_ctrl;
1794         struct v4l2_ctrl *level_ctrl;
1795         const char *codec_name;
1796         u32 profile_cid;
1797         u32 level_cid;
1798         int profile;
1799         int level;
1800
1801         switch (ctx->codec->src_fourcc) {
1802         case V4L2_PIX_FMT_H264:
1803                 codec_name = "H264";
1804                 profile_cid = V4L2_CID_MPEG_VIDEO_H264_PROFILE;
1805                 level_cid = V4L2_CID_MPEG_VIDEO_H264_LEVEL;
1806                 profile_ctrl = ctx->h264_profile_ctrl;
1807                 level_ctrl = ctx->h264_level_ctrl;
1808                 profile = coda_h264_profile(profile_idc);
1809                 level = coda_h264_level(level_idc);
1810                 break;
1811         case V4L2_PIX_FMT_MPEG2:
1812                 codec_name = "MPEG-2";
1813                 profile_cid = V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE;
1814                 level_cid = V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL;
1815                 profile_ctrl = ctx->mpeg2_profile_ctrl;
1816                 level_ctrl = ctx->mpeg2_level_ctrl;
1817                 profile = coda_mpeg2_profile(profile_idc);
1818                 level = coda_mpeg2_level(level_idc);
1819                 break;
1820         case V4L2_PIX_FMT_MPEG4:
1821                 codec_name = "MPEG-4";
1822                 profile_cid = V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE;
1823                 level_cid = V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL;
1824                 profile_ctrl = ctx->mpeg4_profile_ctrl;
1825                 level_ctrl = ctx->mpeg4_level_ctrl;
1826                 profile = coda_mpeg4_profile(profile_idc);
1827                 level = coda_mpeg4_level(level_idc);
1828                 break;
1829         default:
1830                 return;
1831         }
1832
1833         profile_names = v4l2_ctrl_get_menu(profile_cid);
1834         level_names = v4l2_ctrl_get_menu(level_cid);
1835
1836         if (profile < 0) {
1837                 v4l2_warn(&ctx->dev->v4l2_dev, "Invalid %s profile: %u\n",
1838                           codec_name, profile_idc);
1839         } else {
1840                 coda_dbg(1, ctx, "Parsed %s profile: %s\n", codec_name,
1841                          profile_names[profile]);
1842                 coda_update_menu_ctrl(profile_ctrl, profile);
1843         }
1844
1845         if (level < 0) {
1846                 v4l2_warn(&ctx->dev->v4l2_dev, "Invalid %s level: %u\n",
1847                           codec_name, level_idc);
1848         } else {
1849                 coda_dbg(1, ctx, "Parsed %s level: %s\n", codec_name,
1850                          level_names[level]);
1851                 coda_update_menu_ctrl(level_ctrl, level);
1852         }
1853 }
1854
1855 static void coda_queue_source_change_event(struct coda_ctx *ctx)
1856 {
1857         static const struct v4l2_event source_change_event = {
1858                 .type = V4L2_EVENT_SOURCE_CHANGE,
1859                 .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
1860         };
1861
1862         v4l2_event_queue_fh(&ctx->fh, &source_change_event);
1863 }
1864
1865 static void coda_buf_queue(struct vb2_buffer *vb)
1866 {
1867         struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1868         struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1869         struct vb2_queue *vq = vb->vb2_queue;
1870         struct coda_q_data *q_data;
1871
1872         q_data = get_q_data(ctx, vb->vb2_queue->type);
1873
1874         /*
1875          * In the decoder case, immediately try to copy the buffer into the
1876          * bitstream ringbuffer and mark it as ready to be dequeued.
1877          */
1878         if (ctx->bitstream.size && vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1879                 /*
1880                  * For backwards compatibility, queuing an empty buffer marks
1881                  * the stream end
1882                  */
1883                 if (vb2_get_plane_payload(vb, 0) == 0)
1884                         coda_bit_stream_end_flag(ctx);
1885
1886                 if (q_data->fourcc == V4L2_PIX_FMT_H264) {
1887                         /*
1888                          * Unless already done, try to obtain profile_idc and
1889                          * level_idc from the SPS header. This allows to decide
1890                          * whether to enable reordering during sequence
1891                          * initialization.
1892                          */
1893                         if (!ctx->params.h264_profile_idc) {
1894                                 coda_sps_parse_profile(ctx, vb);
1895                                 coda_update_profile_level_ctrls(ctx,
1896                                                 ctx->params.h264_profile_idc,
1897                                                 ctx->params.h264_level_idc);
1898                         }
1899                 }
1900
1901                 mutex_lock(&ctx->bitstream_mutex);
1902                 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1903                 if (vb2_is_streaming(vb->vb2_queue))
1904                         /* This set buf->sequence = ctx->qsequence++ */
1905                         coda_fill_bitstream(ctx, NULL);
1906                 mutex_unlock(&ctx->bitstream_mutex);
1907
1908                 if (!ctx->initialized) {
1909                         /*
1910                          * Run sequence initialization in case the queued
1911                          * buffer contained headers.
1912                          */
1913                         if (vb2_is_streaming(vb->vb2_queue) &&
1914                             ctx->ops->seq_init_work) {
1915                                 queue_work(ctx->dev->workqueue,
1916                                            &ctx->seq_init_work);
1917                                 flush_work(&ctx->seq_init_work);
1918                         }
1919
1920                         if (ctx->initialized)
1921                                 coda_queue_source_change_event(ctx);
1922                 }
1923         } else {
1924                 if ((ctx->inst_type == CODA_INST_ENCODER || !ctx->use_bit) &&
1925                     vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1926                         vbuf->sequence = ctx->qsequence++;
1927                 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1928         }
1929 }
1930
1931 int coda_alloc_aux_buf(struct coda_dev *dev, struct coda_aux_buf *buf,
1932                        size_t size, const char *name, struct dentry *parent)
1933 {
1934         buf->vaddr = dma_alloc_coherent(dev->dev, size, &buf->paddr,
1935                                         GFP_KERNEL);
1936         if (!buf->vaddr) {
1937                 v4l2_err(&dev->v4l2_dev,
1938                          "Failed to allocate %s buffer of size %zu\n",
1939                          name, size);
1940                 return -ENOMEM;
1941         }
1942
1943         buf->size = size;
1944
1945         if (name && parent) {
1946                 buf->blob.data = buf->vaddr;
1947                 buf->blob.size = size;
1948                 buf->dentry = debugfs_create_blob(name, 0444, parent,
1949                                                   &buf->blob);
1950         }
1951
1952         return 0;
1953 }
1954
1955 void coda_free_aux_buf(struct coda_dev *dev,
1956                        struct coda_aux_buf *buf)
1957 {
1958         if (buf->vaddr) {
1959                 dma_free_coherent(dev->dev, buf->size, buf->vaddr, buf->paddr);
1960                 buf->vaddr = NULL;
1961                 buf->size = 0;
1962                 debugfs_remove(buf->dentry);
1963                 buf->dentry = NULL;
1964         }
1965 }
1966
1967 static int coda_start_streaming(struct vb2_queue *q, unsigned int count)
1968 {
1969         struct coda_ctx *ctx = vb2_get_drv_priv(q);
1970         struct v4l2_device *v4l2_dev = &ctx->dev->v4l2_dev;
1971         struct coda_q_data *q_data_src, *q_data_dst;
1972         struct v4l2_m2m_buffer *m2m_buf, *tmp;
1973         struct vb2_v4l2_buffer *buf;
1974         struct list_head list;
1975         int ret = 0;
1976
1977         if (count < 1)
1978                 return -EINVAL;
1979
1980         coda_dbg(1, ctx, "start streaming %s\n", v4l2_type_names[q->type]);
1981
1982         INIT_LIST_HEAD(&list);
1983
1984         q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
1985         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1986                 if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit) {
1987                         /* copy the buffers that were queued before streamon */
1988                         mutex_lock(&ctx->bitstream_mutex);
1989                         coda_fill_bitstream(ctx, &list);
1990                         mutex_unlock(&ctx->bitstream_mutex);
1991
1992                         if (ctx->dev->devtype->product != CODA_960 &&
1993                             coda_get_bitstream_payload(ctx) < 512) {
1994                                 v4l2_err(v4l2_dev, "start payload < 512\n");
1995                                 ret = -EINVAL;
1996                                 goto err;
1997                         }
1998
1999                         if (!ctx->initialized) {
2000                                 /* Run sequence initialization */
2001                                 if (ctx->ops->seq_init_work) {
2002                                         queue_work(ctx->dev->workqueue,
2003                                                    &ctx->seq_init_work);
2004                                         flush_work(&ctx->seq_init_work);
2005                                 }
2006                         }
2007                 }
2008
2009                 /*
2010                  * Check the first input JPEG buffer to determine chroma
2011                  * subsampling.
2012                  */
2013                 if (q_data_src->fourcc == V4L2_PIX_FMT_JPEG) {
2014                         buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
2015                         coda_jpeg_decode_header(ctx, &buf->vb2_buf);
2016                         /*
2017                          * We have to start streaming even if the first buffer
2018                          * does not contain a valid JPEG image. The error will
2019                          * be caught during device run and will be signalled
2020                          * via the capture buffer error flag.
2021                          */
2022
2023                         q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
2024                         q_data_dst->width = round_up(q_data_src->width, 16);
2025                         q_data_dst->height = round_up(q_data_src->height, 16);
2026                         q_data_dst->bytesperline = q_data_dst->width;
2027                         if (ctx->params.jpeg_chroma_subsampling ==
2028                             V4L2_JPEG_CHROMA_SUBSAMPLING_420) {
2029                                 q_data_dst->sizeimage =
2030                                                 q_data_dst->bytesperline *
2031                                                 q_data_dst->height * 3 / 2;
2032                                 if (q_data_dst->fourcc != V4L2_PIX_FMT_YUV420)
2033                                         q_data_dst->fourcc = V4L2_PIX_FMT_NV12;
2034                         } else {
2035                                 q_data_dst->sizeimage =
2036                                                 q_data_dst->bytesperline *
2037                                                 q_data_dst->height * 2;
2038                                 q_data_dst->fourcc = V4L2_PIX_FMT_YUV422P;
2039                         }
2040                         q_data_dst->rect.left = 0;
2041                         q_data_dst->rect.top = 0;
2042                         q_data_dst->rect.width = q_data_src->width;
2043                         q_data_dst->rect.height = q_data_src->height;
2044                 }
2045                 ctx->streamon_out = 1;
2046         } else {
2047                 ctx->streamon_cap = 1;
2048         }
2049
2050         /* Don't start the coda unless both queues are on */
2051         if (!(ctx->streamon_out && ctx->streamon_cap))
2052                 goto out;
2053
2054         q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
2055         if ((q_data_src->rect.width != q_data_dst->width &&
2056              round_up(q_data_src->rect.width, 16) != q_data_dst->width) ||
2057             (q_data_src->rect.height != q_data_dst->height &&
2058              round_up(q_data_src->rect.height, 16) != q_data_dst->height)) {
2059                 v4l2_err(v4l2_dev, "can't convert %dx%d to %dx%d\n",
2060                          q_data_src->rect.width, q_data_src->rect.height,
2061                          q_data_dst->width, q_data_dst->height);
2062                 ret = -EINVAL;
2063                 goto err;
2064         }
2065
2066         /* Allow BIT decoder device_run with no new buffers queued */
2067         if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit)
2068                 v4l2_m2m_set_src_buffered(ctx->fh.m2m_ctx, true);
2069
2070         ctx->gopcounter = ctx->params.gop_size - 1;
2071
2072         if (q_data_dst->fourcc == V4L2_PIX_FMT_JPEG)
2073                 ctx->params.gop_size = 1;
2074         ctx->gopcounter = ctx->params.gop_size - 1;
2075         /* Only decoders have this control */
2076         if (ctx->mb_err_cnt_ctrl)
2077                 v4l2_ctrl_s_ctrl(ctx->mb_err_cnt_ctrl, 0);
2078
2079         ret = ctx->ops->start_streaming(ctx);
2080         if (ctx->inst_type == CODA_INST_DECODER) {
2081                 if (ret == -EAGAIN)
2082                         goto out;
2083         }
2084         if (ret < 0)
2085                 goto err;
2086
2087 out:
2088         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
2089                 list_for_each_entry_safe(m2m_buf, tmp, &list, list) {
2090                         list_del(&m2m_buf->list);
2091                         v4l2_m2m_buf_done(&m2m_buf->vb, VB2_BUF_STATE_DONE);
2092                 }
2093         }
2094         return 0;
2095
2096 err:
2097         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
2098                 list_for_each_entry_safe(m2m_buf, tmp, &list, list) {
2099                         list_del(&m2m_buf->list);
2100                         v4l2_m2m_buf_done(&m2m_buf->vb, VB2_BUF_STATE_QUEUED);
2101                 }
2102                 while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
2103                         v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
2104         } else {
2105                 while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
2106                         v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
2107         }
2108         return ret;
2109 }
2110
2111 static void coda_stop_streaming(struct vb2_queue *q)
2112 {
2113         struct coda_ctx *ctx = vb2_get_drv_priv(q);
2114         struct coda_dev *dev = ctx->dev;
2115         struct vb2_v4l2_buffer *buf;
2116         bool stop;
2117
2118         stop = ctx->streamon_out && ctx->streamon_cap;
2119
2120         coda_dbg(1, ctx, "stop streaming %s\n", v4l2_type_names[q->type]);
2121
2122         if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
2123                 ctx->streamon_out = 0;
2124
2125                 coda_bit_stream_end_flag(ctx);
2126
2127                 ctx->qsequence = 0;
2128
2129                 while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx)))
2130                         v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
2131         } else {
2132                 ctx->streamon_cap = 0;
2133
2134                 ctx->osequence = 0;
2135                 ctx->sequence_offset = 0;
2136
2137                 while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx)))
2138                         v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
2139         }
2140
2141         if (stop) {
2142                 struct coda_buffer_meta *meta;
2143
2144                 if (ctx->ops->seq_end_work) {
2145                         queue_work(dev->workqueue, &ctx->seq_end_work);
2146                         flush_work(&ctx->seq_end_work);
2147                 }
2148                 spin_lock(&ctx->buffer_meta_lock);
2149                 while (!list_empty(&ctx->buffer_meta_list)) {
2150                         meta = list_first_entry(&ctx->buffer_meta_list,
2151                                                 struct coda_buffer_meta, list);
2152                         list_del(&meta->list);
2153                         kfree(meta);
2154                 }
2155                 ctx->num_metas = 0;
2156                 spin_unlock(&ctx->buffer_meta_lock);
2157                 kfifo_init(&ctx->bitstream_fifo,
2158                         ctx->bitstream.vaddr, ctx->bitstream.size);
2159                 ctx->runcounter = 0;
2160                 ctx->aborting = 0;
2161                 ctx->hold = false;
2162         }
2163
2164         if (!ctx->streamon_out && !ctx->streamon_cap)
2165                 ctx->bit_stream_param &= ~CODA_BIT_STREAM_END_FLAG;
2166 }
2167
2168 static const struct vb2_ops coda_qops = {
2169         .queue_setup            = coda_queue_setup,
2170         .buf_prepare            = coda_buf_prepare,
2171         .buf_queue              = coda_buf_queue,
2172         .start_streaming        = coda_start_streaming,
2173         .stop_streaming         = coda_stop_streaming,
2174         .wait_prepare           = vb2_ops_wait_prepare,
2175         .wait_finish            = vb2_ops_wait_finish,
2176 };
2177
2178 static int coda_s_ctrl(struct v4l2_ctrl *ctrl)
2179 {
2180         const char * const *val_names = v4l2_ctrl_get_menu(ctrl->id);
2181         struct coda_ctx *ctx =
2182                         container_of(ctrl->handler, struct coda_ctx, ctrls);
2183
2184         if (val_names)
2185                 coda_dbg(2, ctx, "s_ctrl: id = 0x%x, name = \"%s\", val = %d (\"%s\")\n",
2186                          ctrl->id, ctrl->name, ctrl->val, val_names[ctrl->val]);
2187         else
2188                 coda_dbg(2, ctx, "s_ctrl: id = 0x%x, name = \"%s\", val = %d\n",
2189                          ctrl->id, ctrl->name, ctrl->val);
2190
2191         switch (ctrl->id) {
2192         case V4L2_CID_HFLIP:
2193                 if (ctrl->val)
2194                         ctx->params.rot_mode |= CODA_MIR_HOR;
2195                 else
2196                         ctx->params.rot_mode &= ~CODA_MIR_HOR;
2197                 break;
2198         case V4L2_CID_VFLIP:
2199                 if (ctrl->val)
2200                         ctx->params.rot_mode |= CODA_MIR_VER;
2201                 else
2202                         ctx->params.rot_mode &= ~CODA_MIR_VER;
2203                 break;
2204         case V4L2_CID_MPEG_VIDEO_BITRATE:
2205                 ctx->params.bitrate = ctrl->val / 1000;
2206                 ctx->params.bitrate_changed = true;
2207                 break;
2208         case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
2209                 ctx->params.gop_size = ctrl->val;
2210                 break;
2211         case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP:
2212                 ctx->params.h264_intra_qp = ctrl->val;
2213                 ctx->params.h264_intra_qp_changed = true;
2214                 break;
2215         case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP:
2216                 ctx->params.h264_inter_qp = ctrl->val;
2217                 break;
2218         case V4L2_CID_MPEG_VIDEO_H264_MIN_QP:
2219                 ctx->params.h264_min_qp = ctrl->val;
2220                 break;
2221         case V4L2_CID_MPEG_VIDEO_H264_MAX_QP:
2222                 ctx->params.h264_max_qp = ctrl->val;
2223                 break;
2224         case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA:
2225                 ctx->params.h264_slice_alpha_c0_offset_div2 = ctrl->val;
2226                 break;
2227         case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA:
2228                 ctx->params.h264_slice_beta_offset_div2 = ctrl->val;
2229                 break;
2230         case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE:
2231                 ctx->params.h264_disable_deblocking_filter_idc = ctrl->val;
2232                 break;
2233         case V4L2_CID_MPEG_VIDEO_H264_CONSTRAINED_INTRA_PREDICTION:
2234                 ctx->params.h264_constrained_intra_pred_flag = ctrl->val;
2235                 break;
2236         case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE:
2237                 ctx->params.frame_rc_enable = ctrl->val;
2238                 break;
2239         case V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE:
2240                 ctx->params.mb_rc_enable = ctrl->val;
2241                 break;
2242         case V4L2_CID_MPEG_VIDEO_H264_CHROMA_QP_INDEX_OFFSET:
2243                 ctx->params.h264_chroma_qp_index_offset = ctrl->val;
2244                 break;
2245         case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
2246                 /* TODO: switch between baseline and constrained baseline */
2247                 if (ctx->inst_type == CODA_INST_ENCODER)
2248                         ctx->params.h264_profile_idc = 66;
2249                 break;
2250         case V4L2_CID_MPEG_VIDEO_H264_LEVEL:
2251                 /* nothing to do, this is set by the encoder */
2252                 break;
2253         case V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP:
2254                 ctx->params.mpeg4_intra_qp = ctrl->val;
2255                 break;
2256         case V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP:
2257                 ctx->params.mpeg4_inter_qp = ctrl->val;
2258                 break;
2259         case V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE:
2260         case V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL:
2261         case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE:
2262         case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL:
2263                 /* nothing to do, these are fixed */
2264                 break;
2265         case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE:
2266                 ctx->params.slice_mode = ctrl->val;
2267                 ctx->params.slice_mode_changed = true;
2268                 break;
2269         case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB:
2270                 ctx->params.slice_max_mb = ctrl->val;
2271                 ctx->params.slice_mode_changed = true;
2272                 break;
2273         case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES:
2274                 ctx->params.slice_max_bits = ctrl->val * 8;
2275                 ctx->params.slice_mode_changed = true;
2276                 break;
2277         case V4L2_CID_MPEG_VIDEO_HEADER_MODE:
2278                 break;
2279         case V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB:
2280                 ctx->params.intra_refresh = ctrl->val;
2281                 ctx->params.intra_refresh_changed = true;
2282                 break;
2283         case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME:
2284                 ctx->params.force_ipicture = true;
2285                 break;
2286         case V4L2_CID_JPEG_COMPRESSION_QUALITY:
2287                 coda_set_jpeg_compression_quality(ctx, ctrl->val);
2288                 break;
2289         case V4L2_CID_JPEG_RESTART_INTERVAL:
2290                 ctx->params.jpeg_restart_interval = ctrl->val;
2291                 break;
2292         case V4L2_CID_MPEG_VIDEO_VBV_DELAY:
2293                 ctx->params.vbv_delay = ctrl->val;
2294                 break;
2295         case V4L2_CID_MPEG_VIDEO_VBV_SIZE:
2296                 ctx->params.vbv_size = min(ctrl->val * 8192, 0x7fffffff);
2297                 break;
2298         default:
2299                 coda_dbg(1, ctx, "Invalid control, id=%d, val=%d\n",
2300                          ctrl->id, ctrl->val);
2301                 return -EINVAL;
2302         }
2303
2304         return 0;
2305 }
2306
2307 static const struct v4l2_ctrl_ops coda_ctrl_ops = {
2308         .s_ctrl = coda_s_ctrl,
2309 };
2310
2311 static void coda_encode_ctrls(struct coda_ctx *ctx)
2312 {
2313         int max_gop_size = (ctx->dev->devtype->product == CODA_DX6) ? 60 : 99;
2314
2315         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2316                 V4L2_CID_MPEG_VIDEO_BITRATE, 0, 32767000, 1000, 0);
2317         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2318                 V4L2_CID_MPEG_VIDEO_GOP_SIZE, 0, max_gop_size, 1, 16);
2319         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2320                 V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP, 0, 51, 1, 25);
2321         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2322                 V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP, 0, 51, 1, 25);
2323         if (ctx->dev->devtype->product != CODA_960) {
2324                 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2325                         V4L2_CID_MPEG_VIDEO_H264_MIN_QP, 0, 51, 1, 12);
2326         }
2327         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2328                 V4L2_CID_MPEG_VIDEO_H264_MAX_QP, 0, 51, 1, 51);
2329         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2330                 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA, -6, 6, 1, 0);
2331         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2332                 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA, -6, 6, 1, 0);
2333         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2334                 V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE,
2335                 V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_DISABLED_AT_SLICE_BOUNDARY,
2336                 0x0, V4L2_MPEG_VIDEO_H264_LOOP_FILTER_MODE_ENABLED);
2337         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2338                 V4L2_CID_MPEG_VIDEO_H264_CONSTRAINED_INTRA_PREDICTION, 0, 1, 1,
2339                 0);
2340         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2341                 V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE, 0, 1, 1, 1);
2342         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2343                 V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE, 0, 1, 1, 1);
2344         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2345                 V4L2_CID_MPEG_VIDEO_H264_CHROMA_QP_INDEX_OFFSET, -12, 12, 1, 0);
2346         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2347                 V4L2_CID_MPEG_VIDEO_H264_PROFILE,
2348                 V4L2_MPEG_VIDEO_H264_PROFILE_CONSTRAINED_BASELINE, 0x0,
2349                 V4L2_MPEG_VIDEO_H264_PROFILE_CONSTRAINED_BASELINE);
2350         if (ctx->dev->devtype->product == CODA_HX4 ||
2351             ctx->dev->devtype->product == CODA_7541) {
2352                 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2353                         V4L2_CID_MPEG_VIDEO_H264_LEVEL,
2354                         V4L2_MPEG_VIDEO_H264_LEVEL_3_1,
2355                         ~((1 << V4L2_MPEG_VIDEO_H264_LEVEL_2_0) |
2356                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_0) |
2357                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_1)),
2358                         V4L2_MPEG_VIDEO_H264_LEVEL_3_1);
2359         }
2360         if (ctx->dev->devtype->product == CODA_960) {
2361                 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2362                         V4L2_CID_MPEG_VIDEO_H264_LEVEL,
2363                         V4L2_MPEG_VIDEO_H264_LEVEL_4_2,
2364                         ~((1 << V4L2_MPEG_VIDEO_H264_LEVEL_1_0) |
2365                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_2_0) |
2366                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_0) |
2367                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_1) |
2368                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_3_2) |
2369                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_4_0) |
2370                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_4_1) |
2371                           (1 << V4L2_MPEG_VIDEO_H264_LEVEL_4_2)),
2372                         V4L2_MPEG_VIDEO_H264_LEVEL_4_0);
2373         }
2374         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2375                 V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP, 1, 31, 1, 2);
2376         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2377                 V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP, 1, 31, 1, 2);
2378         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2379                 V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE,
2380                 V4L2_MPEG_VIDEO_MPEG4_PROFILE_SIMPLE, 0x0,
2381                 V4L2_MPEG_VIDEO_MPEG4_PROFILE_SIMPLE);
2382         if (ctx->dev->devtype->product == CODA_HX4 ||
2383             ctx->dev->devtype->product == CODA_7541 ||
2384             ctx->dev->devtype->product == CODA_960) {
2385                 v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2386                         V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL,
2387                         V4L2_MPEG_VIDEO_MPEG4_LEVEL_5,
2388                         ~(1 << V4L2_MPEG_VIDEO_MPEG4_LEVEL_5),
2389                         V4L2_MPEG_VIDEO_MPEG4_LEVEL_5);
2390         }
2391         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2392                 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE,
2393                 V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_MAX_BYTES, 0x0,
2394                 V4L2_MPEG_VIDEO_MULTI_SLICE_MODE_SINGLE);
2395         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2396                 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB, 1, 0x3fffffff, 1, 1);
2397         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2398                 V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES, 1, 0x3fffffff, 1,
2399                 500);
2400         v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
2401                 V4L2_CID_MPEG_VIDEO_HEADER_MODE,
2402                 V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME,
2403                 (1 << V4L2_MPEG_VIDEO_HEADER_MODE_SEPARATE),
2404                 V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME);
2405         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2406                 V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB, 0,
2407                 1920 * 1088 / 256, 1, 0);
2408         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2409                 V4L2_CID_MPEG_VIDEO_VBV_DELAY, 0, 0x7fff, 1, 0);
2410         /*
2411          * The maximum VBV size value is 0x7fffffff bits,
2412          * one bit less than 262144 KiB
2413          */
2414         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2415                 V4L2_CID_MPEG_VIDEO_VBV_SIZE, 0, 262144, 1, 0);
2416 }
2417
2418 static void coda_jpeg_encode_ctrls(struct coda_ctx *ctx)
2419 {
2420         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2421                 V4L2_CID_JPEG_COMPRESSION_QUALITY, 5, 100, 1, 50);
2422         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2423                 V4L2_CID_JPEG_RESTART_INTERVAL, 0, 100, 1, 0);
2424 }
2425
2426 static void coda_decode_ctrls(struct coda_ctx *ctx)
2427 {
2428         u8 max;
2429
2430         ctx->h264_profile_ctrl = v4l2_ctrl_new_std_menu(&ctx->ctrls,
2431                 &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_H264_PROFILE,
2432                 V4L2_MPEG_VIDEO_H264_PROFILE_HIGH,
2433                 ~((1 << V4L2_MPEG_VIDEO_H264_PROFILE_CONSTRAINED_BASELINE) |
2434                   (1 << V4L2_MPEG_VIDEO_H264_PROFILE_MAIN) |
2435                   (1 << V4L2_MPEG_VIDEO_H264_PROFILE_HIGH)),
2436                 V4L2_MPEG_VIDEO_H264_PROFILE_HIGH);
2437         if (ctx->h264_profile_ctrl)
2438                 ctx->h264_profile_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2439
2440         if (ctx->dev->devtype->product == CODA_HX4 ||
2441             ctx->dev->devtype->product == CODA_7541)
2442                 max = V4L2_MPEG_VIDEO_H264_LEVEL_4_0;
2443         else if (ctx->dev->devtype->product == CODA_960)
2444                 max = V4L2_MPEG_VIDEO_H264_LEVEL_4_1;
2445         else
2446                 return;
2447         ctx->h264_level_ctrl = v4l2_ctrl_new_std_menu(&ctx->ctrls,
2448                 &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_H264_LEVEL, max, 0, max);
2449         if (ctx->h264_level_ctrl)
2450                 ctx->h264_level_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2451
2452         ctx->mpeg2_profile_ctrl = v4l2_ctrl_new_std_menu(&ctx->ctrls,
2453                 &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE,
2454                 V4L2_MPEG_VIDEO_MPEG2_PROFILE_HIGH, 0,
2455                 V4L2_MPEG_VIDEO_MPEG2_PROFILE_HIGH);
2456         if (ctx->mpeg2_profile_ctrl)
2457                 ctx->mpeg2_profile_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2458
2459         ctx->mpeg2_level_ctrl = v4l2_ctrl_new_std_menu(&ctx->ctrls,
2460                 &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL,
2461                 V4L2_MPEG_VIDEO_MPEG2_LEVEL_HIGH, 0,
2462                 V4L2_MPEG_VIDEO_MPEG2_LEVEL_HIGH);
2463         if (ctx->mpeg2_level_ctrl)
2464                 ctx->mpeg2_level_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2465
2466         ctx->mpeg4_profile_ctrl = v4l2_ctrl_new_std_menu(&ctx->ctrls,
2467                 &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE,
2468                 V4L2_MPEG_VIDEO_MPEG4_PROFILE_ADVANCED_CODING_EFFICIENCY, 0,
2469                 V4L2_MPEG_VIDEO_MPEG4_PROFILE_ADVANCED_CODING_EFFICIENCY);
2470         if (ctx->mpeg4_profile_ctrl)
2471                 ctx->mpeg4_profile_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2472
2473         ctx->mpeg4_level_ctrl = v4l2_ctrl_new_std_menu(&ctx->ctrls,
2474                 &coda_ctrl_ops, V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL,
2475                 V4L2_MPEG_VIDEO_MPEG4_LEVEL_5, 0,
2476                 V4L2_MPEG_VIDEO_MPEG4_LEVEL_5);
2477         if (ctx->mpeg4_level_ctrl)
2478                 ctx->mpeg4_level_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2479 }
2480
2481 static const struct v4l2_ctrl_config coda_mb_err_cnt_ctrl_config = {
2482         .id     = V4L2_CID_CODA_MB_ERR_CNT,
2483         .name   = "Macroblocks Error Count",
2484         .type   = V4L2_CTRL_TYPE_INTEGER,
2485         .min    = 0,
2486         .max    = 0x7fffffff,
2487         .step   = 1,
2488 };
2489
2490 static int coda_ctrls_setup(struct coda_ctx *ctx)
2491 {
2492         v4l2_ctrl_handler_init(&ctx->ctrls, 2);
2493
2494         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2495                 V4L2_CID_HFLIP, 0, 1, 1, 0);
2496         v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2497                 V4L2_CID_VFLIP, 0, 1, 1, 0);
2498         if (ctx->inst_type == CODA_INST_ENCODER) {
2499                 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2500                                   V4L2_CID_MIN_BUFFERS_FOR_OUTPUT,
2501                                   1, 1, 1, 1);
2502                 if (ctx->cvd->dst_formats[0] == V4L2_PIX_FMT_JPEG)
2503                         coda_jpeg_encode_ctrls(ctx);
2504                 else
2505                         coda_encode_ctrls(ctx);
2506         } else {
2507                 v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
2508                                   V4L2_CID_MIN_BUFFERS_FOR_CAPTURE,
2509                                   1, 1, 1, 1);
2510                 if (ctx->cvd->src_formats[0] == V4L2_PIX_FMT_H264)
2511                         coda_decode_ctrls(ctx);
2512
2513                 ctx->mb_err_cnt_ctrl = v4l2_ctrl_new_custom(&ctx->ctrls,
2514                                                 &coda_mb_err_cnt_ctrl_config,
2515                                                 NULL);
2516                 if (ctx->mb_err_cnt_ctrl)
2517                         ctx->mb_err_cnt_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
2518         }
2519
2520         if (ctx->ctrls.error) {
2521                 v4l2_err(&ctx->dev->v4l2_dev,
2522                         "control initialization error (%d)",
2523                         ctx->ctrls.error);
2524                 return -EINVAL;
2525         }
2526
2527         return v4l2_ctrl_handler_setup(&ctx->ctrls);
2528 }
2529
2530 static int coda_queue_init(struct coda_ctx *ctx, struct vb2_queue *vq)
2531 {
2532         vq->drv_priv = ctx;
2533         vq->ops = &coda_qops;
2534         vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
2535         vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
2536         vq->lock = &ctx->dev->dev_mutex;
2537         /* One way to indicate end-of-stream for coda is to set the
2538          * bytesused == 0. However by default videobuf2 handles bytesused
2539          * equal to 0 as a special case and changes its value to the size
2540          * of the buffer. Set the allow_zero_bytesused flag, so
2541          * that videobuf2 will keep the value of bytesused intact.
2542          */
2543         vq->allow_zero_bytesused = 1;
2544         /*
2545          * We might be fine with no buffers on some of the queues, but that
2546          * would need to be reflected in job_ready(). Currently we expect all
2547          * queues to have at least one buffer queued.
2548          */
2549         vq->min_buffers_needed = 1;
2550         vq->dev = ctx->dev->dev;
2551
2552         return vb2_queue_init(vq);
2553 }
2554
2555 int coda_encoder_queue_init(void *priv, struct vb2_queue *src_vq,
2556                             struct vb2_queue *dst_vq)
2557 {
2558         int ret;
2559
2560         src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2561         src_vq->io_modes = VB2_DMABUF | VB2_MMAP;
2562         src_vq->mem_ops = &vb2_dma_contig_memops;
2563
2564         ret = coda_queue_init(priv, src_vq);
2565         if (ret)
2566                 return ret;
2567
2568         dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2569         dst_vq->io_modes = VB2_DMABUF | VB2_MMAP;
2570         dst_vq->mem_ops = &vb2_dma_contig_memops;
2571
2572         return coda_queue_init(priv, dst_vq);
2573 }
2574
2575 int coda_decoder_queue_init(void *priv, struct vb2_queue *src_vq,
2576                             struct vb2_queue *dst_vq)
2577 {
2578         int ret;
2579
2580         src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2581         src_vq->io_modes = VB2_DMABUF | VB2_MMAP | VB2_USERPTR;
2582         src_vq->mem_ops = &vb2_vmalloc_memops;
2583
2584         ret = coda_queue_init(priv, src_vq);
2585         if (ret)
2586                 return ret;
2587
2588         dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2589         dst_vq->io_modes = VB2_DMABUF | VB2_MMAP;
2590         dst_vq->dma_attrs = DMA_ATTR_NO_KERNEL_MAPPING;
2591         dst_vq->mem_ops = &vb2_dma_contig_memops;
2592
2593         return coda_queue_init(priv, dst_vq);
2594 }
2595
2596 /*
2597  * File operations
2598  */
2599
2600 static int coda_open(struct file *file)
2601 {
2602         struct video_device *vdev = video_devdata(file);
2603         struct coda_dev *dev = video_get_drvdata(vdev);
2604         struct coda_ctx *ctx;
2605         unsigned int max = ~0;
2606         char *name;
2607         int ret;
2608         int idx;
2609
2610         ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
2611         if (!ctx)
2612                 return -ENOMEM;
2613
2614         if (dev->devtype->product == CODA_DX6)
2615                 max = CODADX6_MAX_INSTANCES - 1;
2616         idx = ida_alloc_max(&dev->ida, max, GFP_KERNEL);
2617         if (idx < 0) {
2618                 ret = idx;
2619                 goto err_coda_max;
2620         }
2621
2622         name = kasprintf(GFP_KERNEL, "context%d", idx);
2623         if (!name) {
2624                 ret = -ENOMEM;
2625                 goto err_coda_name_init;
2626         }
2627
2628         ctx->debugfs_entry = debugfs_create_dir(name, dev->debugfs_root);
2629         kfree(name);
2630
2631         ctx->cvd = to_coda_video_device(vdev);
2632         ctx->inst_type = ctx->cvd->type;
2633         ctx->ops = ctx->cvd->ops;
2634         ctx->use_bit = !ctx->cvd->direct;
2635         init_completion(&ctx->completion);
2636         INIT_WORK(&ctx->pic_run_work, coda_pic_run_work);
2637         if (ctx->ops->seq_init_work)
2638                 INIT_WORK(&ctx->seq_init_work, ctx->ops->seq_init_work);
2639         if (ctx->ops->seq_end_work)
2640                 INIT_WORK(&ctx->seq_end_work, ctx->ops->seq_end_work);
2641         v4l2_fh_init(&ctx->fh, video_devdata(file));
2642         file->private_data = &ctx->fh;
2643         v4l2_fh_add(&ctx->fh);
2644         ctx->dev = dev;
2645         ctx->idx = idx;
2646
2647         coda_dbg(1, ctx, "open instance (%p)\n", ctx);
2648
2649         switch (dev->devtype->product) {
2650         case CODA_960:
2651                 /*
2652                  * Enabling the BWB when decoding can hang the firmware with
2653                  * certain streams. The issue was tracked as ENGR00293425 by
2654                  * Freescale. As a workaround, disable BWB for all decoders.
2655                  * The enable_bwb module parameter allows to override this.
2656                  */
2657                 if (enable_bwb || ctx->inst_type == CODA_INST_ENCODER)
2658                         ctx->frame_mem_ctrl = CODA9_FRAME_ENABLE_BWB;
2659                 fallthrough;
2660         case CODA_HX4:
2661         case CODA_7541:
2662                 ctx->reg_idx = 0;
2663                 break;
2664         default:
2665                 ctx->reg_idx = idx;
2666         }
2667         if (ctx->dev->vdoa && !disable_vdoa) {
2668                 ctx->vdoa = vdoa_context_create(dev->vdoa);
2669                 if (!ctx->vdoa)
2670                         v4l2_warn(&dev->v4l2_dev,
2671                                   "Failed to create vdoa context: not using vdoa");
2672         }
2673         ctx->use_vdoa = false;
2674
2675         /* Power up and upload firmware if necessary */
2676         ret = pm_runtime_resume_and_get(dev->dev);
2677         if (ret < 0) {
2678                 v4l2_err(&dev->v4l2_dev, "failed to power up: %d\n", ret);
2679                 goto err_pm_get;
2680         }
2681
2682         ret = clk_prepare_enable(dev->clk_per);
2683         if (ret)
2684                 goto err_clk_enable;
2685
2686         ret = clk_prepare_enable(dev->clk_ahb);
2687         if (ret)
2688                 goto err_clk_ahb;
2689
2690         set_default_params(ctx);
2691         ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx,
2692                                             ctx->ops->queue_init);
2693         if (IS_ERR(ctx->fh.m2m_ctx)) {
2694                 ret = PTR_ERR(ctx->fh.m2m_ctx);
2695
2696                 v4l2_err(&dev->v4l2_dev, "%s return error (%d)\n",
2697                          __func__, ret);
2698                 goto err_ctx_init;
2699         }
2700
2701         ret = coda_ctrls_setup(ctx);
2702         if (ret) {
2703                 v4l2_err(&dev->v4l2_dev, "failed to setup coda controls\n");
2704                 goto err_ctrls_setup;
2705         }
2706
2707         ctx->fh.ctrl_handler = &ctx->ctrls;
2708
2709         mutex_init(&ctx->bitstream_mutex);
2710         mutex_init(&ctx->buffer_mutex);
2711         mutex_init(&ctx->wakeup_mutex);
2712         INIT_LIST_HEAD(&ctx->buffer_meta_list);
2713         spin_lock_init(&ctx->buffer_meta_lock);
2714
2715         return 0;
2716
2717 err_ctrls_setup:
2718         v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
2719 err_ctx_init:
2720         clk_disable_unprepare(dev->clk_ahb);
2721 err_clk_ahb:
2722         clk_disable_unprepare(dev->clk_per);
2723 err_clk_enable:
2724         pm_runtime_put_sync(dev->dev);
2725 err_pm_get:
2726         v4l2_fh_del(&ctx->fh);
2727         v4l2_fh_exit(&ctx->fh);
2728 err_coda_name_init:
2729         ida_free(&dev->ida, ctx->idx);
2730 err_coda_max:
2731         kfree(ctx);
2732         return ret;
2733 }
2734
2735 static int coda_release(struct file *file)
2736 {
2737         struct coda_dev *dev = video_drvdata(file);
2738         struct coda_ctx *ctx = fh_to_ctx(file->private_data);
2739
2740         coda_dbg(1, ctx, "release instance (%p)\n", ctx);
2741
2742         if (ctx->inst_type == CODA_INST_DECODER && ctx->use_bit)
2743                 coda_bit_stream_end_flag(ctx);
2744
2745         /* If this instance is running, call .job_abort and wait for it to end */
2746         v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
2747
2748         if (ctx->vdoa)
2749                 vdoa_context_destroy(ctx->vdoa);
2750
2751         /* In case the instance was not running, we still need to call SEQ_END */
2752         if (ctx->ops->seq_end_work) {
2753                 queue_work(dev->workqueue, &ctx->seq_end_work);
2754                 flush_work(&ctx->seq_end_work);
2755         }
2756
2757         if (ctx->dev->devtype->product == CODA_DX6)
2758                 coda_free_aux_buf(dev, &ctx->workbuf);
2759
2760         v4l2_ctrl_handler_free(&ctx->ctrls);
2761         clk_disable_unprepare(dev->clk_ahb);
2762         clk_disable_unprepare(dev->clk_per);
2763         pm_runtime_put_sync(dev->dev);
2764         v4l2_fh_del(&ctx->fh);
2765         v4l2_fh_exit(&ctx->fh);
2766         ida_free(&dev->ida, ctx->idx);
2767         if (ctx->ops->release)
2768                 ctx->ops->release(ctx);
2769         debugfs_remove_recursive(ctx->debugfs_entry);
2770         kfree(ctx);
2771
2772         return 0;
2773 }
2774
2775 static const struct v4l2_file_operations coda_fops = {
2776         .owner          = THIS_MODULE,
2777         .open           = coda_open,
2778         .release        = coda_release,
2779         .poll           = v4l2_m2m_fop_poll,
2780         .unlocked_ioctl = video_ioctl2,
2781         .mmap           = v4l2_m2m_fop_mmap,
2782 };
2783
2784 static int coda_hw_init(struct coda_dev *dev)
2785 {
2786         u32 data;
2787         u16 *p;
2788         int i, ret;
2789
2790         ret = clk_prepare_enable(dev->clk_per);
2791         if (ret)
2792                 goto err_clk_per;
2793
2794         ret = clk_prepare_enable(dev->clk_ahb);
2795         if (ret)
2796                 goto err_clk_ahb;
2797
2798         reset_control_reset(dev->rstc);
2799
2800         /*
2801          * Copy the first CODA_ISRAM_SIZE in the internal SRAM.
2802          * The 16-bit chars in the code buffer are in memory access
2803          * order, re-sort them to CODA order for register download.
2804          * Data in this SRAM survives a reboot.
2805          */
2806         p = (u16 *)dev->codebuf.vaddr;
2807         if (dev->devtype->product == CODA_DX6) {
2808                 for (i = 0; i < (CODA_ISRAM_SIZE / 2); i++)  {
2809                         data = CODA_DOWN_ADDRESS_SET(i) |
2810                                 CODA_DOWN_DATA_SET(p[i ^ 1]);
2811                         coda_write(dev, data, CODA_REG_BIT_CODE_DOWN);
2812                 }
2813         } else {
2814                 for (i = 0; i < (CODA_ISRAM_SIZE / 2); i++) {
2815                         data = CODA_DOWN_ADDRESS_SET(i) |
2816                                 CODA_DOWN_DATA_SET(p[round_down(i, 4) +
2817                                                         3 - (i % 4)]);
2818                         coda_write(dev, data, CODA_REG_BIT_CODE_DOWN);
2819                 }
2820         }
2821
2822         /* Clear registers */
2823         for (i = 0; i < 64; i++)
2824                 coda_write(dev, 0, CODA_REG_BIT_CODE_BUF_ADDR + i * 4);
2825
2826         /* Tell the BIT where to find everything it needs */
2827         if (dev->devtype->product == CODA_960 ||
2828             dev->devtype->product == CODA_7541 ||
2829             dev->devtype->product == CODA_HX4) {
2830                 coda_write(dev, dev->tempbuf.paddr,
2831                                 CODA_REG_BIT_TEMP_BUF_ADDR);
2832                 coda_write(dev, 0, CODA_REG_BIT_BIT_STREAM_PARAM);
2833         } else {
2834                 coda_write(dev, dev->workbuf.paddr,
2835                               CODA_REG_BIT_WORK_BUF_ADDR);
2836         }
2837         coda_write(dev, dev->codebuf.paddr,
2838                       CODA_REG_BIT_CODE_BUF_ADDR);
2839         coda_write(dev, 0, CODA_REG_BIT_CODE_RUN);
2840
2841         /* Set default values */
2842         switch (dev->devtype->product) {
2843         case CODA_DX6:
2844                 coda_write(dev, CODADX6_STREAM_BUF_PIC_FLUSH,
2845                            CODA_REG_BIT_STREAM_CTRL);
2846                 break;
2847         default:
2848                 coda_write(dev, CODA7_STREAM_BUF_PIC_FLUSH,
2849                            CODA_REG_BIT_STREAM_CTRL);
2850         }
2851         if (dev->devtype->product == CODA_960)
2852                 coda_write(dev, CODA9_FRAME_ENABLE_BWB,
2853                                 CODA_REG_BIT_FRAME_MEM_CTRL);
2854         else
2855                 coda_write(dev, 0, CODA_REG_BIT_FRAME_MEM_CTRL);
2856
2857         if (dev->devtype->product != CODA_DX6)
2858                 coda_write(dev, 0, CODA7_REG_BIT_AXI_SRAM_USE);
2859
2860         coda_write(dev, CODA_INT_INTERRUPT_ENABLE,
2861                       CODA_REG_BIT_INT_ENABLE);
2862
2863         /* Reset VPU and start processor */
2864         data = coda_read(dev, CODA_REG_BIT_CODE_RESET);
2865         data |= CODA_REG_RESET_ENABLE;
2866         coda_write(dev, data, CODA_REG_BIT_CODE_RESET);
2867         udelay(10);
2868         data &= ~CODA_REG_RESET_ENABLE;
2869         coda_write(dev, data, CODA_REG_BIT_CODE_RESET);
2870         coda_write(dev, CODA_REG_RUN_ENABLE, CODA_REG_BIT_CODE_RUN);
2871
2872         clk_disable_unprepare(dev->clk_ahb);
2873         clk_disable_unprepare(dev->clk_per);
2874
2875         return 0;
2876
2877 err_clk_ahb:
2878         clk_disable_unprepare(dev->clk_per);
2879 err_clk_per:
2880         return ret;
2881 }
2882
2883 static int coda_register_device(struct coda_dev *dev, int i)
2884 {
2885         struct video_device *vfd = &dev->vfd[i];
2886         const char *name;
2887         int ret;
2888
2889         if (i >= dev->devtype->num_vdevs)
2890                 return -EINVAL;
2891         name = dev->devtype->vdevs[i]->name;
2892
2893         strscpy(vfd->name, dev->devtype->vdevs[i]->name, sizeof(vfd->name));
2894         vfd->fops       = &coda_fops;
2895         vfd->ioctl_ops  = &coda_ioctl_ops;
2896         vfd->release    = video_device_release_empty;
2897         vfd->lock       = &dev->dev_mutex;
2898         vfd->v4l2_dev   = &dev->v4l2_dev;
2899         vfd->vfl_dir    = VFL_DIR_M2M;
2900         vfd->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
2901         video_set_drvdata(vfd, dev);
2902
2903         /* Not applicable, use the selection API instead */
2904         v4l2_disable_ioctl(vfd, VIDIOC_CROPCAP);
2905         v4l2_disable_ioctl(vfd, VIDIOC_G_CROP);
2906         v4l2_disable_ioctl(vfd, VIDIOC_S_CROP);
2907
2908         if (dev->devtype->vdevs[i]->type == CODA_INST_ENCODER) {
2909                 v4l2_disable_ioctl(vfd, VIDIOC_DECODER_CMD);
2910                 v4l2_disable_ioctl(vfd, VIDIOC_TRY_DECODER_CMD);
2911                 if (dev->devtype->vdevs[i]->dst_formats[0] == V4L2_PIX_FMT_JPEG) {
2912                         v4l2_disable_ioctl(vfd, VIDIOC_ENUM_FRAMEINTERVALS);
2913                         v4l2_disable_ioctl(vfd, VIDIOC_G_PARM);
2914                         v4l2_disable_ioctl(vfd, VIDIOC_S_PARM);
2915                 }
2916         } else {
2917                 v4l2_disable_ioctl(vfd, VIDIOC_ENCODER_CMD);
2918                 v4l2_disable_ioctl(vfd, VIDIOC_TRY_ENCODER_CMD);
2919                 v4l2_disable_ioctl(vfd, VIDIOC_ENUM_FRAMESIZES);
2920                 v4l2_disable_ioctl(vfd, VIDIOC_ENUM_FRAMEINTERVALS);
2921                 v4l2_disable_ioctl(vfd, VIDIOC_G_PARM);
2922                 v4l2_disable_ioctl(vfd, VIDIOC_S_PARM);
2923         }
2924
2925         ret = video_register_device(vfd, VFL_TYPE_VIDEO, 0);
2926         if (!ret)
2927                 v4l2_info(&dev->v4l2_dev, "%s registered as %s\n",
2928                           name, video_device_node_name(vfd));
2929         return ret;
2930 }
2931
2932 static void coda_copy_firmware(struct coda_dev *dev, const u8 * const buf,
2933                                size_t size)
2934 {
2935         u32 *src = (u32 *)buf;
2936
2937         /* Check if the firmware has a 16-byte Freescale header, skip it */
2938         if (buf[0] == 'M' && buf[1] == 'X')
2939                 src += 4;
2940         /*
2941          * Check whether the firmware is in native order or pre-reordered for
2942          * memory access. The first instruction opcode always is 0xe40e.
2943          */
2944         if (__le16_to_cpup((__le16 *)src) == 0xe40e) {
2945                 u32 *dst = dev->codebuf.vaddr;
2946                 int i;
2947
2948                 /* Firmware in native order, reorder while copying */
2949                 if (dev->devtype->product == CODA_DX6) {
2950                         for (i = 0; i < (size - 16) / 4; i++)
2951                                 dst[i] = (src[i] << 16) | (src[i] >> 16);
2952                 } else {
2953                         for (i = 0; i < (size - 16) / 4; i += 2) {
2954                                 dst[i] = (src[i + 1] << 16) | (src[i + 1] >> 16);
2955                                 dst[i + 1] = (src[i] << 16) | (src[i] >> 16);
2956                         }
2957                 }
2958         } else {
2959                 /* Copy the already reordered firmware image */
2960                 memcpy(dev->codebuf.vaddr, src, size);
2961         }
2962 }
2963
2964 static void coda_fw_callback(const struct firmware *fw, void *context);
2965
2966 static int coda_firmware_request(struct coda_dev *dev)
2967 {
2968         char *fw;
2969
2970         if (dev->firmware >= ARRAY_SIZE(dev->devtype->firmware))
2971                 return -EINVAL;
2972
2973         fw = dev->devtype->firmware[dev->firmware];
2974
2975         dev_dbg(dev->dev, "requesting firmware '%s' for %s\n", fw,
2976                 coda_product_name(dev->devtype->product));
2977
2978         return request_firmware_nowait(THIS_MODULE, true, fw, dev->dev,
2979                                        GFP_KERNEL, dev, coda_fw_callback);
2980 }
2981
2982 static void coda_fw_callback(const struct firmware *fw, void *context)
2983 {
2984         struct coda_dev *dev = context;
2985         int i, ret;
2986
2987         if (!fw) {
2988                 dev->firmware++;
2989                 ret = coda_firmware_request(dev);
2990                 if (ret < 0) {
2991                         v4l2_err(&dev->v4l2_dev, "firmware request failed\n");
2992                         goto put_pm;
2993                 }
2994                 return;
2995         }
2996         if (dev->firmware > 0) {
2997                 /*
2998                  * Since we can't suppress warnings for failed asynchronous
2999                  * firmware requests, report that the fallback firmware was
3000                  * found.
3001                  */
3002                 dev_info(dev->dev, "Using fallback firmware %s\n",
3003                          dev->devtype->firmware[dev->firmware]);
3004         }
3005
3006         /* allocate auxiliary per-device code buffer for the BIT processor */
3007         ret = coda_alloc_aux_buf(dev, &dev->codebuf, fw->size, "codebuf",
3008                                  dev->debugfs_root);
3009         if (ret < 0)
3010                 goto put_pm;
3011
3012         coda_copy_firmware(dev, fw->data, fw->size);
3013         release_firmware(fw);
3014
3015         ret = coda_hw_init(dev);
3016         if (ret < 0) {
3017                 v4l2_err(&dev->v4l2_dev, "HW initialization failed\n");
3018                 goto put_pm;
3019         }
3020
3021         ret = coda_check_firmware(dev);
3022         if (ret < 0)
3023                 goto put_pm;
3024
3025         dev->m2m_dev = v4l2_m2m_init(&coda_m2m_ops);
3026         if (IS_ERR(dev->m2m_dev)) {
3027                 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
3028                 goto put_pm;
3029         }
3030
3031         for (i = 0; i < dev->devtype->num_vdevs; i++) {
3032                 ret = coda_register_device(dev, i);
3033                 if (ret) {
3034                         v4l2_err(&dev->v4l2_dev,
3035                                  "Failed to register %s video device: %d\n",
3036                                  dev->devtype->vdevs[i]->name, ret);
3037                         goto rel_vfd;
3038                 }
3039         }
3040
3041         pm_runtime_put_sync(dev->dev);
3042         return;
3043
3044 rel_vfd:
3045         while (--i >= 0)
3046                 video_unregister_device(&dev->vfd[i]);
3047         v4l2_m2m_release(dev->m2m_dev);
3048 put_pm:
3049         pm_runtime_put_sync(dev->dev);
3050 }
3051
3052 enum coda_platform {
3053         CODA_IMX27,
3054         CODA_IMX51,
3055         CODA_IMX53,
3056         CODA_IMX6Q,
3057         CODA_IMX6DL,
3058 };
3059
3060 static const struct coda_devtype coda_devdata[] = {
3061         [CODA_IMX27] = {
3062                 .firmware     = {
3063                         "vpu_fw_imx27_TO2.bin",
3064                         "vpu/vpu_fw_imx27_TO2.bin",
3065                         "v4l-codadx6-imx27.bin"
3066                 },
3067                 .product      = CODA_DX6,
3068                 .codecs       = codadx6_codecs,
3069                 .num_codecs   = ARRAY_SIZE(codadx6_codecs),
3070                 .vdevs        = codadx6_video_devices,
3071                 .num_vdevs    = ARRAY_SIZE(codadx6_video_devices),
3072                 .workbuf_size = 288 * 1024 + FMO_SLICE_SAVE_BUF_SIZE * 8 * 1024,
3073                 .iram_size    = 0xb000,
3074         },
3075         [CODA_IMX51] = {
3076                 .firmware     = {
3077                         "vpu_fw_imx51.bin",
3078                         "vpu/vpu_fw_imx51.bin",
3079                         "v4l-codahx4-imx51.bin"
3080                 },
3081                 .product      = CODA_HX4,
3082                 .codecs       = codahx4_codecs,
3083                 .num_codecs   = ARRAY_SIZE(codahx4_codecs),
3084                 .vdevs        = codahx4_video_devices,
3085                 .num_vdevs    = ARRAY_SIZE(codahx4_video_devices),
3086                 .workbuf_size = 128 * 1024,
3087                 .tempbuf_size = 304 * 1024,
3088                 .iram_size    = 0x14000,
3089         },
3090         [CODA_IMX53] = {
3091                 .firmware     = {
3092                         "vpu_fw_imx53.bin",
3093                         "vpu/vpu_fw_imx53.bin",
3094                         "v4l-coda7541-imx53.bin"
3095                 },
3096                 .product      = CODA_7541,
3097                 .codecs       = coda7_codecs,
3098                 .num_codecs   = ARRAY_SIZE(coda7_codecs),
3099                 .vdevs        = coda7_video_devices,
3100                 .num_vdevs    = ARRAY_SIZE(coda7_video_devices),
3101                 .workbuf_size = 128 * 1024,
3102                 .tempbuf_size = 304 * 1024,
3103                 .iram_size    = 0x14000,
3104         },
3105         [CODA_IMX6Q] = {
3106                 .firmware     = {
3107                         "vpu_fw_imx6q.bin",
3108                         "vpu/vpu_fw_imx6q.bin",
3109                         "v4l-coda960-imx6q.bin"
3110                 },
3111                 .product      = CODA_960,
3112                 .codecs       = coda9_codecs,
3113                 .num_codecs   = ARRAY_SIZE(coda9_codecs),
3114                 .vdevs        = coda9_video_devices,
3115                 .num_vdevs    = ARRAY_SIZE(coda9_video_devices),
3116                 .workbuf_size = 80 * 1024,
3117                 .tempbuf_size = 204 * 1024,
3118                 .iram_size    = 0x21000,
3119         },
3120         [CODA_IMX6DL] = {
3121                 .firmware     = {
3122                         "vpu_fw_imx6d.bin",
3123                         "vpu/vpu_fw_imx6d.bin",
3124                         "v4l-coda960-imx6dl.bin"
3125                 },
3126                 .product      = CODA_960,
3127                 .codecs       = coda9_codecs,
3128                 .num_codecs   = ARRAY_SIZE(coda9_codecs),
3129                 .vdevs        = coda9_video_devices,
3130                 .num_vdevs    = ARRAY_SIZE(coda9_video_devices),
3131                 .workbuf_size = 80 * 1024,
3132                 .tempbuf_size = 204 * 1024,
3133                 .iram_size    = 0x1f000, /* leave 4k for suspend code */
3134         },
3135 };
3136
3137 static const struct of_device_id coda_dt_ids[] = {
3138         { .compatible = "fsl,imx27-vpu", .data = &coda_devdata[CODA_IMX27] },
3139         { .compatible = "fsl,imx51-vpu", .data = &coda_devdata[CODA_IMX51] },
3140         { .compatible = "fsl,imx53-vpu", .data = &coda_devdata[CODA_IMX53] },
3141         { .compatible = "fsl,imx6q-vpu", .data = &coda_devdata[CODA_IMX6Q] },
3142         { .compatible = "fsl,imx6dl-vpu", .data = &coda_devdata[CODA_IMX6DL] },
3143         { /* sentinel */ }
3144 };
3145 MODULE_DEVICE_TABLE(of, coda_dt_ids);
3146
3147 static int coda_probe(struct platform_device *pdev)
3148 {
3149         struct device_node *np = pdev->dev.of_node;
3150         struct gen_pool *pool;
3151         struct coda_dev *dev;
3152         int ret, irq;
3153
3154         dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
3155         if (!dev)
3156                 return -ENOMEM;
3157
3158         dev->devtype = of_device_get_match_data(&pdev->dev);
3159
3160         dev->dev = &pdev->dev;
3161         dev->clk_per = devm_clk_get(&pdev->dev, "per");
3162         if (IS_ERR(dev->clk_per)) {
3163                 dev_err(&pdev->dev, "Could not get per clock\n");
3164                 return PTR_ERR(dev->clk_per);
3165         }
3166
3167         dev->clk_ahb = devm_clk_get(&pdev->dev, "ahb");
3168         if (IS_ERR(dev->clk_ahb)) {
3169                 dev_err(&pdev->dev, "Could not get ahb clock\n");
3170                 return PTR_ERR(dev->clk_ahb);
3171         }
3172
3173         /* Get  memory for physical registers */
3174         dev->regs_base = devm_platform_ioremap_resource(pdev, 0);
3175         if (IS_ERR(dev->regs_base))
3176                 return PTR_ERR(dev->regs_base);
3177
3178         /* IRQ */
3179         irq = platform_get_irq_byname(pdev, "bit");
3180         if (irq < 0)
3181                 irq = platform_get_irq(pdev, 0);
3182         if (irq < 0)
3183                 return irq;
3184
3185         ret = devm_request_irq(&pdev->dev, irq, coda_irq_handler, 0,
3186                                CODA_NAME "-video", dev);
3187         if (ret < 0) {
3188                 dev_err(&pdev->dev, "failed to request irq: %d\n", ret);
3189                 return ret;
3190         }
3191
3192         /* JPEG IRQ */
3193         if (dev->devtype->product == CODA_960) {
3194                 irq = platform_get_irq_byname(pdev, "jpeg");
3195                 if (irq < 0)
3196                         return irq;
3197
3198                 ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
3199                                                 coda9_jpeg_irq_handler,
3200                                                 IRQF_ONESHOT, CODA_NAME "-jpeg",
3201                                                 dev);
3202                 if (ret < 0) {
3203                         dev_err(&pdev->dev, "failed to request jpeg irq\n");
3204                         return ret;
3205                 }
3206         }
3207
3208         dev->rstc = devm_reset_control_get_optional_exclusive(&pdev->dev,
3209                                                               NULL);
3210         if (IS_ERR(dev->rstc)) {
3211                 ret = PTR_ERR(dev->rstc);
3212                 dev_err(&pdev->dev, "failed get reset control: %d\n", ret);
3213                 return ret;
3214         }
3215
3216         /* Get IRAM pool from device tree */
3217         pool = of_gen_pool_get(np, "iram", 0);
3218         if (!pool) {
3219                 dev_err(&pdev->dev, "iram pool not available\n");
3220                 return -ENOMEM;
3221         }
3222         dev->iram_pool = pool;
3223
3224         /* Get vdoa_data if supported by the platform */
3225         dev->vdoa = coda_get_vdoa_data();
3226         if (PTR_ERR(dev->vdoa) == -EPROBE_DEFER)
3227                 return -EPROBE_DEFER;
3228
3229         ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
3230         if (ret)
3231                 return ret;
3232
3233         ratelimit_default_init(&dev->mb_err_rs);
3234         mutex_init(&dev->dev_mutex);
3235         mutex_init(&dev->coda_mutex);
3236         ida_init(&dev->ida);
3237
3238         dev->debugfs_root = debugfs_create_dir("coda", NULL);
3239
3240         /* allocate auxiliary per-device buffers for the BIT processor */
3241         if (dev->devtype->product == CODA_DX6) {
3242                 ret = coda_alloc_aux_buf(dev, &dev->workbuf,
3243                                          dev->devtype->workbuf_size, "workbuf",
3244                                          dev->debugfs_root);
3245                 if (ret < 0)
3246                         goto err_v4l2_register;
3247         }
3248
3249         if (dev->devtype->tempbuf_size) {
3250                 ret = coda_alloc_aux_buf(dev, &dev->tempbuf,
3251                                          dev->devtype->tempbuf_size, "tempbuf",
3252                                          dev->debugfs_root);
3253                 if (ret < 0)
3254                         goto err_v4l2_register;
3255         }
3256
3257         dev->iram.size = dev->devtype->iram_size;
3258         dev->iram.vaddr = gen_pool_dma_alloc(dev->iram_pool, dev->iram.size,
3259                                              &dev->iram.paddr);
3260         if (!dev->iram.vaddr) {
3261                 dev_warn(&pdev->dev, "unable to alloc iram\n");
3262         } else {
3263                 memset(dev->iram.vaddr, 0, dev->iram.size);
3264                 dev->iram.blob.data = dev->iram.vaddr;
3265                 dev->iram.blob.size = dev->iram.size;
3266                 dev->iram.dentry = debugfs_create_blob("iram", 0444,
3267                                                        dev->debugfs_root,
3268                                                        &dev->iram.blob);
3269         }
3270
3271         dev->workqueue = alloc_workqueue("coda", WQ_UNBOUND | WQ_MEM_RECLAIM, 1);
3272         if (!dev->workqueue) {
3273                 dev_err(&pdev->dev, "unable to alloc workqueue\n");
3274                 ret = -ENOMEM;
3275                 goto err_v4l2_register;
3276         }
3277
3278         platform_set_drvdata(pdev, dev);
3279
3280         /*
3281          * Start activated so we can directly call coda_hw_init in
3282          * coda_fw_callback regardless of whether CONFIG_PM is
3283          * enabled or whether the device is associated with a PM domain.
3284          */
3285         pm_runtime_get_noresume(&pdev->dev);
3286         pm_runtime_set_active(&pdev->dev);
3287         pm_runtime_enable(&pdev->dev);
3288
3289         ret = coda_firmware_request(dev);
3290         if (ret)
3291                 goto err_alloc_workqueue;
3292         return 0;
3293
3294 err_alloc_workqueue:
3295         pm_runtime_disable(&pdev->dev);
3296         pm_runtime_put_noidle(&pdev->dev);
3297         destroy_workqueue(dev->workqueue);
3298 err_v4l2_register:
3299         v4l2_device_unregister(&dev->v4l2_dev);
3300         return ret;
3301 }
3302
3303 static void coda_remove(struct platform_device *pdev)
3304 {
3305         struct coda_dev *dev = platform_get_drvdata(pdev);
3306         int i;
3307
3308         for (i = 0; i < ARRAY_SIZE(dev->vfd); i++) {
3309                 if (video_get_drvdata(&dev->vfd[i]))
3310                         video_unregister_device(&dev->vfd[i]);
3311         }
3312         if (dev->m2m_dev)
3313                 v4l2_m2m_release(dev->m2m_dev);
3314         pm_runtime_disable(&pdev->dev);
3315         v4l2_device_unregister(&dev->v4l2_dev);
3316         destroy_workqueue(dev->workqueue);
3317         if (dev->iram.vaddr)
3318                 gen_pool_free(dev->iram_pool, (unsigned long)dev->iram.vaddr,
3319                               dev->iram.size);
3320         coda_free_aux_buf(dev, &dev->codebuf);
3321         coda_free_aux_buf(dev, &dev->tempbuf);
3322         coda_free_aux_buf(dev, &dev->workbuf);
3323         debugfs_remove_recursive(dev->debugfs_root);
3324         ida_destroy(&dev->ida);
3325 }
3326
3327 #ifdef CONFIG_PM
3328 static int coda_runtime_resume(struct device *dev)
3329 {
3330         struct coda_dev *cdev = dev_get_drvdata(dev);
3331         int ret = 0;
3332
3333         if (dev->pm_domain && cdev->codebuf.vaddr) {
3334                 ret = coda_hw_init(cdev);
3335                 if (ret)
3336                         v4l2_err(&cdev->v4l2_dev, "HW initialization failed\n");
3337         }
3338
3339         return ret;
3340 }
3341 #endif
3342
3343 static const struct dev_pm_ops coda_pm_ops = {
3344         SET_RUNTIME_PM_OPS(NULL, coda_runtime_resume, NULL)
3345 };
3346
3347 static struct platform_driver coda_driver = {
3348         .probe  = coda_probe,
3349         .remove_new = coda_remove,
3350         .driver = {
3351                 .name   = CODA_NAME,
3352                 .of_match_table = coda_dt_ids,
3353                 .pm     = &coda_pm_ops,
3354         },
3355 };
3356
3357 module_platform_driver(coda_driver);
3358
3359 MODULE_LICENSE("GPL");
3360 MODULE_AUTHOR("Javier Martin <[email protected]>");
3361 MODULE_DESCRIPTION("Coda multi-standard codec V4L2 driver");